Common Size Financial Statement Calculation Formula

Calculate common size percentages for income statements and balance sheets to analyze financial performance and compare companies of different sizes.

Comprehensive Guide to Common Size Financial Statement Analysis

Common size financial statement analysis is a powerful tool used by financial analysts, investors, and business managers to evaluate company performance regardless of size. This technique converts absolute financial figures into relative percentages, making it easier to compare companies of different sizes or track performance trends over time.

What Are Common Size Financial Statements?

Common size financial statements present all items as percentages of a common base figure rather than absolute monetary amounts. For income statements, this base is typically total revenue (sales), while for balance sheets, it’s usually total assets.

• Income Statement: All line items expressed as a percentage of total revenue
• Balance Sheet: All line items expressed as a percentage of total assets
• Cash Flow Statement: Can be expressed as a percentage of total cash inflows

Why Use Common Size Analysis?

This analytical approach offers several key advantages:

1. Comparability: Enables direct comparison between companies of different sizes or across different time periods
2. Trend Analysis: Helps identify changes in financial structure or performance over time
3. Industry Benchmarking: Allows comparison against industry averages or competitors
4. Financial Health Assessment: Reveals the proportion of revenue consumed by various expenses or the composition of assets/liabilities
5. Decision Making: Provides insights for strategic decisions about cost control, pricing, or capital structure

How to Calculate Common Size Percentages

The calculation process is straightforward but requires careful attention to the base figure:

For Income Statements:

Each line item ÷ Total Revenue × 100 = Common Size Percentage

For Balance Sheets:

Each line item ÷ Total Assets × 100 = Common Size Percentage

Interpreting Common Size Financial Statements

Proper interpretation requires understanding what different percentage patterns indicate about a company’s financial health:

Metric	High Percentage Indicates	Low Percentage Indicates	Industry Average (Manufacturing)
COGS % of Revenue	High production costs, potential inefficiencies	Efficient production, strong pricing power	55-70%
Gross Profit %	Strong pricing power, efficient operations	Weak pricing, high production costs	30-45%
Operating Expenses %	High overhead, potential bloat	Lean operations, good cost control	20-35%
Current Assets % of Total Assets	Liquid position, working capital intensive	Capital intensive, less liquid	40-60%
Current Liabilities % of Total Assets	High short-term obligations, potential liquidity risk	Strong short-term financial position	20-40%

Common Size Analysis vs. Traditional Financial Analysis

Aspect	Traditional Analysis	Common Size Analysis
Data Presentation	Absolute dollar amounts	Percentage of base figure
Comparability	Difficult between different-sized companies	Easy comparison regardless of size
Trend Analysis	Can be affected by inflation or growth	Shows relative changes clearly
Industry Benchmarking	Requires size-adjusted metrics	Direct comparison possible
Focus	Absolute performance	Relative financial structure

Practical Applications of Common Size Analysis

This analytical technique has numerous practical applications in business and finance:

• Investment Analysis: Investors use common size statements to compare potential investments across different industries or company sizes
• Credit Analysis: Lenders examine common size statements to assess a company’s financial health and repayment capacity
• Strategic Planning: Management uses these analyses to identify areas for cost reduction or operational improvement
• Mergers & Acquisitions: Helps in valuing target companies and assessing synergies
• Financial Distress Prediction: Certain percentage patterns can indicate early signs of financial trouble

Limitations of Common Size Analysis

While powerful, this technique has some limitations that analysts should consider:

1. Lacks Absolute Context: Percentages don’t show the actual scale of operations
2. Industry Variations: “Good” percentages vary significantly by industry
3. One-Dimensional: Should be used with other analytical tools
4. Accounting Policies: Different accounting treatments can affect percentages
5. Inflation Effects: Doesn’t account for price level changes over time

Advanced Techniques in Common Size Analysis

Experienced analysts often combine common size analysis with other techniques:

• Vertical + Horizontal Analysis: Combining common size (vertical) with year-over-year changes (horizontal)
• Peer Group Comparison: Benchmarking against direct competitors
• Time Series Analysis: Tracking percentage changes over multiple periods
• Segment Analysis: Applying common size to business segments
• Ratio Integration: Using common size percentages to calculate financial ratios

Real-World Example: Tech Industry Comparison

Let’s examine how common size analysis might reveal insights when comparing two tech giants:

Company	Revenue	COGS %	R&D %	Operating Margin %	Net Income %
Company A (Hardware)	$274.5B	62.4%	5.4%	25.3%	22.1%
Company B (Software)	$182.9B	36.2%	12.7%	34.8%	28.5%
Industry Average	–	48.7%	8.9%	22.4%	18.3%

This comparison reveals that:

• Company B has significantly lower COGS as a percentage of revenue, typical for software companies
• Company B invests more heavily in R&D relative to revenue
• Both companies outperform industry averages in profitability metrics
• Company A’s higher COGS suggests a more hardware-intensive business model

Authoritative Resources on Common Size Analysis

U.S. Securities and Exchange Commission – How to Read a Financial Statement

SEC Investor Bulletin: How to Read a 10-K

Corporate Finance Institute – Common Size Financial Statement Guide

Best Practices for Common Size Analysis

To maximize the value of common size analysis, follow these professional recommendations:

1. Use Consistent Data Sources: Ensure all financial data comes from the same reporting standard (GAAP, IFRS)
2. Adjust for One-Time Items: Remove extraordinary items that distort normal operations
3. Consider Industry Norms: Compare against relevant industry benchmarks
4. Analyze Trends: Look at multiple periods to identify patterns
5. Combine with Other Metrics: Use alongside ratio analysis and cash flow analysis
6. Document Assumptions: Clearly state any adjustments or assumptions made
7. Visualize Results: Use charts and graphs to make patterns more apparent

The Future of Common Size Analysis

As financial analysis becomes more sophisticated, common size analysis is evolving:

• AI-Powered Insights: Machine learning algorithms can identify patterns in common size data across thousands of companies
• Real-Time Analysis: Cloud-based tools now allow for real-time common size analysis of financial data
• Predictive Modeling: Common size percentages are being used as inputs for predictive financial models
• ESG Integration: Environmental, Social, and Governance factors are being incorporated into common size frameworks
• Automated Benchmarking: Software can now automatically compare a company’s common size metrics against peers

Common Mistakes to Avoid

Even experienced analysts sometimes make these errors:

1. Wrong Base Figure: Using the wrong denominator (e.g., using net income instead of revenue for income statements)
2. Ignoring Industry Differences: Comparing percentages across vastly different industries
3. Overlooking Accounting Changes: Not adjusting for changes in accounting policies
4. Short-Term Focus: Drawing conclusions from a single period without trend analysis
5. Neglecting Absolute Values: Focusing only on percentages while ignoring the actual scale
6. Data Entry Errors: Simple calculation mistakes that lead to incorrect percentages

Case Study: Retail Industry Analysis

Let’s examine how common size analysis might be applied to two retail companies:

Company X (Discount Retailer):

• COGS: 72% of revenue (industry average: 68%)
• SG&A: 22% of revenue (industry average: 25%)
• Operating Margin: 6% (industry average: 7%)
• Inventory: 28% of total assets (industry average: 22%)

Company Y (Luxury Retailer):

• COGS: 38% of revenue (industry average: 42%)
• SG&A: 45% of revenue (industry average: 40%)
• Operating Margin: 17% (industry average: 18%)
• Inventory: 15% of total assets (industry average: 18%)

Analysis reveals:

• Company X has higher COGS typical of discount retailers with lower margins
• Company X maintains leaner SG&A expenses through cost control
• Company Y enjoys much higher gross margins characteristic of luxury goods
• Company Y carries less inventory relative to assets, suggesting different inventory management
• Both companies show operating margins close to their respective industry averages

Implementing Common Size Analysis in Your Business

To effectively implement this analytical technique:

1. Standardize Reporting: Ensure consistent financial statement formats across periods
2. Train Staff: Educate finance teams on proper common size techniques
3. Automate Calculations: Use spreadsheet templates or financial software
4. Integrate with Dashboards: Incorporate common size metrics into business intelligence tools
5. Regular Review: Make common size analysis part of monthly/quarterly financial reviews
6. Competitive Intelligence: Gather competitors’ financials for benchmarking
7. Actionable Insights: Translate findings into specific business improvements

Common Size Analysis in Different Industries

The technique is valuable across sectors but requires industry-specific interpretation:

• Manufacturing: Focus on COGS, inventory levels, and fixed asset intensity
• Retail: Emphasize gross margins, inventory turnover, and SG&A expenses
• Technology: Look at R&D spending, software capitalization policies
• Financial Services: Analyze interest margins, loan loss provisions
• Healthcare: Examine payer mix, bad debt expenses, capital expenditures
• Real Estate: Focus on property-related expenses, leverage ratios

Software Tools for Common Size Analysis

Several tools can help automate and visualize common size analysis:

• Excel/Google Sheets: Basic but powerful for custom analysis
• QuickBooks: Offers built-in common size reporting features
• Tableau/Power BI: For advanced visualization of common size data
• Sage Intacct: Cloud-based financial management with common size capabilities
• Adaptive Insights: Corporate performance management with common size analysis
• Bloomberg Terminal: For professional investors analyzing public companies

Common Size Analysis and Financial Ratios

Common size percentages can be used to calculate and interpret key financial ratios:

Ratio	Calculation Using Common Size %	Interpretation
Gross Margin %	(Gross Profit % of Revenue) × 100	Already a common size metric showing profitability after COGS
Operating Margin %	(Operating Income % of Revenue) × 100	Shows profitability from core operations
Current Ratio	Current Assets % / Current Liabilities %	Liquidity measure (using balance sheet common sizes)
Debt to Assets	Total Liabilities % of Total Assets	Already a common size metric showing leverage
Return on Assets	(Net Income % of Revenue) × (Revenue/Total Assets)	Combines income statement and balance sheet metrics

Common Size Analysis for Small Businesses

Even small businesses can benefit from this technique:

• Simplified Comparison: Compare your business against industry averages
• Cost Control: Identify areas where expenses are higher than typical
• Pricing Strategy: Understand how your gross margins compare to competitors
• Growth Planning: See how your financial structure changes as you grow
• Investor Communications: Present financials in investor-friendly formats
• Loan Applications: Provide lenders with clear financial overviews

Advanced Applications: Common Size Cash Flow Analysis

While less common, cash flow statements can also be analyzed using common size techniques:

• Base Figure: Typically total cash inflows or total revenue
• Operating Activities: Show what percentage of revenue comes from core operations
• Investing Activities: Reveal capital expenditure patterns relative to cash flows
• Financing Activities: Highlight debt and equity financing patterns
• Free Cash Flow: Express as percentage of revenue to show cash generation efficiency

Common Size Analysis in Mergers and Acquisitions

This technique plays a crucial role in M&A due diligence:

• Target Valuation: Assess how the target’s financial structure compares to acquirer
• Synergy Identification: Find areas where combined entity could improve percentages
• Integration Planning: Understand structural differences that need addressing
• Risk Assessment: Identify potential financial red flags in the target
• Post-Merger Tracking: Monitor how combined entity’s percentages evolve

Ethical Considerations in Common Size Analysis

When performing and presenting common size analysis:

• Transparency: Clearly disclose all adjustments and assumptions
• Context: Provide industry benchmarks for proper interpretation
• Materiality: Focus on significant items rather than minor variations
• Consistency: Apply the same methods across all comparisons
• Objectivity: Avoid manipulating percentages to support preconceived conclusions

Common Size Analysis and International Financial Reporting

When analyzing companies across borders:

• Accounting Standards: Be aware of GAAP vs. IFRS differences that affect percentages
• Currency Effects: Consider how exchange rates might distort comparisons
• Cultural Factors: Some industries have different financial structures in different countries
• Regulatory Environments: Local regulations can affect financial statement presentation
• Tax Policies: Different tax regimes impact net income percentages

Developing Your Common Size Analysis Skills

To become proficient in this analytical technique:

1. Study Financial Statements: Regularly analyze real company financials
2. Practice Calculations: Work through examples from different industries
3. Learn Accounting: Understand how transactions affect financial statements
4. Follow Industry Trends: Stay updated on industry-specific financial patterns
5. Use Visualization Tools: Practice creating charts and graphs from common size data
6. Join Professional Groups: Participate in finance and accounting associations
7. Take Courses: Enroll in financial analysis certification programs

Common Size Analysis in Academic Research

This technique is widely used in financial research:

• Corporate Finance Studies: Examining financial structure changes over time
• Industry Analysis: Identifying industry-specific financial patterns
• Bankruptcy Prediction: Developing models using common size percentages
• M&A Research: Studying post-merger financial integration
• International Finance: Comparing financial structures across countries

Common Size Analysis and Behavioral Finance

This technique can reveal interesting behavioral patterns:

• Management Style: Aggressive vs. conservative financial management
• Investor Perception: How certain percentage patterns affect stock valuation
• Market Trends: How common size metrics change with economic cycles
• Corporate Culture: Financial patterns that reflect company values
• Risk Appetite: Leverage and liquidity preferences revealed by percentages

Common Size Analysis in Personal Finance

Individuals can apply similar techniques to personal financial management:

• Household Budget: Express all expenses as percentage of income
• Investment Portfolio: Show asset allocation as percentages
• Debt Management: Track debt as percentage of total assets
• Retirement Planning: Monitor savings rate as percentage of income
• Expense Tracking: Identify areas where spending exceeds typical percentages

The Psychology Behind Common Size Analysis

This technique works because of how humans process information:

• Relative Thinking: People understand proportions better than absolute numbers
• Pattern Recognition: Percentage patterns are easier to spot than dollar amount changes
• Simplification: Reduces complex financials to more manageable comparisons
• Visual Processing: Percentage-based charts are more intuitive
• Benchmarking Instinct: Humans naturally compare against reference points

Common Size Analysis in the Digital Age

Technology is transforming how we perform this analysis:

• Big Data: Analyzing common size metrics across thousands of companies
• AI Patterns: Machine learning identifying subtle percentage patterns
• Real-Time: Continuous updating of common size metrics
• Predictive: Using historical percentages to forecast future performance
• Interactive: Dynamic dashboards that allow drilling into percentage changes

Common Size Analysis and ESG Reporting

This technique is being adapted for sustainability analysis:

• Environmental: Expressing carbon emissions as percentage of revenue
• Social: Showing community investment as percentage of profits
• Governance: Board diversity as percentage of total directors
• Sustainability: Renewable energy usage as percentage of total energy
• Impact: Social impact metrics as percentage of operations

Common Size Analysis for Non-Profit Organizations

Non-profits can benefit from adapted common size techniques:

• Program Expenses: As percentage of total expenses
• Fundraising Efficiency: Fundraising costs as percentage of donations
• Administrative Costs: Overhead as percentage of total budget
• Revenue Sources: Breakdown of funding sources as percentages
• Impact Metrics: Outcomes achieved as percentage of resources

Common Size Analysis in Government Financial Reporting

Public sector entities use similar techniques:

• Budget Analysis: Departmental spending as percentage of total budget
• Revenue Sources: Tax types as percentage of total revenue
• Debt Management: Debt service as percentage of expenditures
• Program Evaluation: Program costs as percentage of outcomes
• Intergovernmental: Federal/state/local funding as percentages

Common Size Analysis and Blockchain Technology

Emerging applications in decentralized finance:

• Smart Contracts: Automating common size calculations
• Token Economics: Analyzing token allocation percentages
• DAO Financials: Expressing treasury allocations as percentages
• DeFi Protocols: Revenue sharing as percentage of total fees
• NFT Projects: Royalty structures as percentage of sales

Common Size Analysis in Healthcare Financial Management

Hospitals and healthcare systems use this technique:

• Revenue Mix: Payer sources as percentage of total revenue
• Cost Structure: Labor, supply, and facility costs as percentages
• Charity Care: Uncompensated care as percentage of expenses
• Capital Expenditures: Equipment purchases as percentage of budget
• Quality Metrics: Outcome measures as percentage of resource use

Common Size Analysis in Education Financial Management

Schools and universities apply similar methods:

• Revenue Sources: Tuition, grants, endowment as percentages
• Expense Allocation: Instruction, research, administration percentages
• Financial Aid: Scholarships as percentage of tuition revenue
• Endowment Performance: Investment returns as percentage of assets
• Faculty Compensation: Salaries as percentage of total expenses

Common Size Analysis in Sports Team Financials

Professional sports teams use this technique:

• Revenue Streams: Ticket sales, broadcasting, merchandise percentages
• Player Costs: Salaries as percentage of total revenue
• Facility Expenses: Stadium costs as percentage of operations
• Winning Percentage: Performance relative to payroll spending
• Sponsorship Value: Sponsorship revenue as percentage of total

Common Size Analysis in the Gig Economy

Platform companies apply these techniques:

• Take Rates: Commission as percentage of transaction value
• Driver/Worker Costs: Payments as percentage of revenue
• Marketing Spend: Customer acquisition costs as percentage
• Technology Costs: Platform development as percentage of expenses
• Unit Economics: Cost per transaction as percentage of revenue

Common Size Analysis in Agricultural Businesses

Farms and agribusinesses use this approach:

• Crop/Yield Analysis: Production costs as percentage of revenue
• Input Costs:
• Land Utilization: Productive acres as percentage of total
• Equipment Costs: Machinery expenses as percentage of assets
• Commodity Price Sensitivity: Revenue impact as percentage change

Common Size Analysis in the Energy Sector

Oil, gas, and renewable energy companies apply this:

• Production Costs: Extraction costs as percentage of revenue
• Exploration Expenses: As percentage of total capital expenditures
• Energy Mix: Renewable vs. fossil fuel as percentage of production
• Carbon Intensity: Emissions as percentage of energy output
• Hedging Costs: As percentage of total financial expenses

Common Size Analysis in the Hospitality Industry

Hotels and restaurants use these techniques:

• Occupancy Costs: As percentage of total revenue
• Food/Beverage Costs: As percentage of sales
• Labor Costs: Payroll as percentage of total expenses
• Seasonal Variations: Revenue changes as percentage of annual total
• Customer Acquisition: Marketing as percentage of revenue

Common Size Analysis in the Transportation Sector

Airlines, trucking, and logistics companies apply this:

• Fuel Costs: As percentage of total operating expenses
• Utilization Rates: Capacity used as percentage of total
• Maintenance Costs: As percentage of total fleet value
• Route Profitability: Revenue per route as percentage of total
• Labor Productivity: Output per employee as percentage of costs

Common Size Analysis in the Construction Industry

Contractors and developers use this method:

• Material Costs: As percentage of total project costs
• Labor Costs: As percentage of total expenses
• Project Margins: Profit as percentage of contract value
• Equipment Utilization: Usage as percentage of capacity
• Bid Success Rate: Wins as percentage of bids submitted

Common Size Analysis in the Technology Sector

Tech companies have unique applications:

• R&D Intensity: R&D as percentage of revenue
• Customer Acquisition Cost: As percentage of lifetime value
• Cloud Infrastructure Costs: As percentage of total expenses
• Subscription Metrics: Churn rate as percentage of customer base
• Stock-Based Compensation: As percentage of total compensation

Common Size Analysis in the Media and Entertainment Industry

Media companies use these techniques:

• Content Costs: Production as percentage of revenue
• Advertising Revenue: As percentage of total revenue
• Subscription Mix: Different tiers as percentage of subscribers
• Talent Costs: As percentage of production budgets
• Piracy Impact: Lost revenue as percentage of total

Common Size Analysis in the Real Estate Industry

Property companies apply this method:

• Occupancy Rates: As percentage of total space
• Operating Expenses: As percentage of rental income
• Debt Service: As percentage of net operating income
• Property Mix: Different types as percentage of portfolio
• Capital Expenditures: As percentage of property value

Common Size Analysis in the Automotive Industry

Car manufacturers and dealers use this:

• Material Costs: As percentage of vehicle price
• Warranty Expenses: As percentage of sales
• Dealer Margins: As percentage of vehicle cost
• Electric Vehicle Mix: As percentage of total production
• Recall Costs: As percentage of total expenses

Common Size Analysis in the Pharmaceutical Industry

Drug companies apply these techniques:

• R&D Costs: As percentage of revenue
• Patent Expiry Impact: Revenue loss as percentage of total
• Clinical Trial Costs: As percentage of R&D budget
• Generic Competition: Market share loss as percentage
• Regulatory Costs: As percentage of total expenses

Common Size Analysis in the Aerospace and Defense Industry

These companies use specialized applications:

• Defense Contracts: As percentage of total revenue
• R&D Amortization: As percentage of total costs
• Supply Chain Costs: As percentage of total expenses
• Backlog Value: As percentage of annual revenue
• Export Controls Impact: As percentage of international sales

Common Size Analysis in the Telecommunications Industry

Telecom companies apply these methods:

• Network Costs: As percentage of total expenses
• Churn Rate: As percentage of customer base
• Spectrum Costs: As percentage of total capital expenditures
• Data vs. Voice Revenue: As percentage of total revenue
• Customer Acquisition Cost: As percentage of lifetime value

Common Size Analysis in the Consumer Packaged Goods Industry

CPG companies use these techniques:

• Marketing Spend: As percentage of revenue
• Distribution Costs: As percentage of total expenses
• Brand Portfolio Mix: Different brands as percentage of total sales
• Private Label Impact: As percentage of total revenue
• Shelf Space Costs: As percentage of retail sales

Common Size Analysis in the Financial Services Industry

Banks and financial institutions apply this:

• Net Interest Margin: As percentage of total assets
• Loan Loss Provisions: As percentage of total loans
• Fee Income: As percentage of total revenue
• Capital Adequacy: As percentage of risk-weighted assets
• Operational Risk Costs: As percentage of total expenses

Common Size Analysis in the Insurance Industry

Insurance companies use these methods:

• Loss Ratio: Claims as percentage of premiums
• Expense Ratio: Operating costs as percentage of premiums
• Combined Ratio: Total costs as percentage of premiums
• Investment Yield: As percentage of total assets
• Reinsurance Costs: As percentage of total premiums

Common Size Analysis in the Legal Industry

Law firms apply these techniques:

• Billable Hours: As percentage of total capacity
• Associate Costs: As percentage of total revenue
• Practice Area Mix: Different specialties as percentage of total
• Client Concentration: Top clients as percentage of total revenue
• Pro Bono Work: As percentage of total billable hours

Common Size Analysis in the Consulting Industry

Consulting firms use these methods:

• Utilization Rates: Billable hours as percentage of total
• Travel Costs: As percentage of total expenses
• Client Acquisition Costs: As percentage of project revenue
• Service Line Mix: Different offerings as percentage of total
• Subcontractor Costs: As percentage of total project costs

Common Size Analysis in the Non-Profit Sector

Non-profits adapt these techniques:

• Program Expenses: As percentage of total expenses
• Fundraising Efficiency: Costs as percentage of funds raised
• Administrative Costs: As percentage of total budget
• Donor Concentration: Top donors as percentage of total revenue
• Grant Dependency: Grants as percentage of total funding

Common Size Analysis in the Education Sector

Schools and universities apply this:

• Instruction Costs: As percentage of total expenses
• Tuition Dependency: Tuition as percentage of total revenue
• Endowment Returns: As percentage of total assets
• Faculty Compensation: As percentage of total budget
• Research Funding: As percentage of total revenue

Common Size Analysis in the Healthcare Sector

Hospitals and health systems use these methods:

• Payer Mix: Different insurers as percentage of revenue
• Charity Care: As percentage of total expenses
• Physician Compensation: As percentage of total costs
• Equipment Costs: As percentage of capital budget
• Readmission Rates: As percentage of total admissions

Common Size Analysis in the Hospitality Industry

Hotels and restaurants apply these techniques:

• Occupancy Costs: As percentage of total revenue
• Food Costs: As percentage of menu prices
• Labor Costs: As percentage of total sales
• Seasonal Variations: Revenue changes as percentage of annual total
• Customer Acquisition: Marketing as percentage of revenue

Common Size Analysis in the Retail Industry

Retailers use these methods extensively:

• COGS: As percentage of sales
• Inventory Turnover: As percentage of total inventory
• Markdowns: As percentage of total sales
• E-commerce Mix: Online sales as percentage of total
• Store Productivity: Sales per square foot as percentage of average

Common Size Analysis in the Manufacturing Industry

Manufacturers apply these techniques:

• Material Costs: As percentage of total production costs
• Labor Costs: As percentage of total expenses
• Overhead Allocation: As percentage of total costs
• Capacity Utilization: As percentage of total capacity
• Warranty Costs: As percentage of total sales

Common Size Analysis in the Technology Sector

Tech companies have unique applications:

• R&D Intensity: R&D as percentage of revenue
• Customer Acquisition Cost: As percentage of lifetime value
• Cloud Infrastructure Costs: As percentage of total expenses
• Subscription Metrics: Churn rate as percentage of customer base
• Stock-Based Compensation: As percentage of total compensation

Common Size Analysis in the Energy Sector

Energy companies apply these techniques:

• Production Costs: As percentage of revenue
• Exploration Expenses: As percentage of total capital expenditures
• Energy Mix: Renewable vs. fossil fuel as percentage of production
• Carbon Intensity: Emissions as percentage of energy output
• Hedging Costs: As percentage of total financial expenses