PercentSwift tool

Percentage Difference Calculator

Compare two values and find their percentage difference using a symmetric percentage difference formula.

Calculator

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Result

Enter values to calculate

The formula will appear here.

Examples

Common calculations

  • Difference between 80 and 100 = 22.22222222%
  • Difference between 50 and 75 = 40%
  • Difference between 10 and 20 = 66.66666667%

Neutral comparisons between two values

Use percentage difference when neither value should be treated as the original baseline.

FAQ

Percentage Difference Calculator questions

What is percentage difference?

It compares two values by dividing their absolute difference by their average, then multiplying by 100.

Is percentage difference the same as percentage change?

No. Percentage change uses one value as the original base; percentage difference uses the average of both values.