Percentage Difference Calculator

Percentage difference is calculated by finding the absolute difference between two values, dividing by their average, then multiplying by 100. Formula: |V1 - V2| / ((V1 + V2) / 2) × 100.

Percentage difference treats both values equally and is symmetric (comparing 100 to 120 gives the same result as 120 to 100). Percentage change assumes one value is the "original" and the other is "new".

Use percentage difference when comparing two values where neither is clearly the "starting point", such as comparing prices from two different stores, temperatures in two cities, or test scores from two students.