Percentage Difference Calculator
Calculate the percentage difference between two values. See a visual comparison and step-by-step formula breakdown.
Percentage Difference vs. Percentage Change
📊 Percentage Difference
Compares two values without implying direction. Neither value is the "original" — they are treated equally.
Formula: |V1 - V2| / ((V1 + V2) / 2) × 100
Use when: Comparing test scores, prices from different stores, measurements from different sources.
📈 Percentage Change
Measures how much a value increased or decreased from an original value. Direction matters.
Formula: ((New - Old) / Old) × 100
Use when: Tracking salary raises, price changes over time, stock performance.
🔒All calculations happen in your browser. No data is sent to any server.