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Percentage Calculators

Percentage Difference Calculator

Compare two values with the percentage difference formula (difference ÷ average × 100), when neither is the reference.

Enter values

Results update as you type.

Result

Percentage difference

22.2222%

Absolute difference
10
Average
45
Step-by-stepShow
  1. |40 − 50| ÷ ((40 + 50) ÷ 2) × 100 = 22.2222%

About the Percentage Difference Calculator

Compare two values with the percentage difference formula (difference ÷ average × 100), when neither is the reference.

Also known as: percent difference, relative difference, difference between two numbers in percent.

How to use this calculator

  1. Enter value a, value b.
  2. The result updates instantly as you type — press Calculate (or Enter) at any time.
  3. Open “Step-by-step” to see how the answer was worked out.
  4. Use Copy result or Share to save the answer or send a link with your inputs.

Formula

% difference = |A − B| ÷ ((A + B)/2) × 100

Worked example

Using the values pre-filled in the calculator above:

  • Value A = 40
  • Value B = 50

the calculator returns:

  • Percentage difference: 22.2222%
  • Absolute difference: 10
  • Average: 45

Working

  1. |40 − 50| ÷ ((40 + 50) ÷ 2) × 100 = 22.2222%