Calcly

Percentage Difference Calculator

Compare two values symmetrically: the difference as a percentage of their average.

value Avalue B

-

Percentage difference

Formula: |A - B| / ((A + B) / 2) x 100

How to use

  1. Enter both values.
  2. Read the percentage difference (always positive, order does not matter).

Examples

Compare 150 and 180
Output: 18.18%. Formula: |150-180| / 165 x 100.

Frequently asked questions

Why relative to the average?

When neither value is the "original", the average is the neutral reference point.

Related tools

Percentages

Percentage Calculator

Calculate X% of Y, find what percent one number is of another, and percentage change.

 Percentages

Percentage Increase Calculator

Calculate the percentage increase (or decrease) between two values.