Percentage Difference Calculator
Compare two numbers without treating either one as the original value.
Percentage Difference Calculator
Percentage Difference Calculator Formula
Use this formula to check the result from the percentage difference calculator or to calculate it by hand.
Formula
|a - b| / ((|a| + |b|) / 2) x 100
Example
Steps
- 1|80 - 100| = 20
- 2(80 + 100) / 2 = 90
- 320 / 90 x 100 = 22.22%
When to use this calculator
Worked examples
The percentage difference between 80 and 100 is 22.222222%.
The percentage difference between 50 and 60 is 18.181818%.
Common mistakes
- Using percentage difference when one number is clearly the starting value.
- Dividing by only one value instead of the average of both values.
Other Calculators
Simple tools for nearby percentage questions.
Percentage Calculator
Calculate a percentage, percent of a number, or part of a whole.
Percentage Increase Calculator
Find percent growth from one value to another.
Percentage Change Calculator
Calculate increases and decreases between old and new values.
Percentage Decrease Calculator
Find percent decrease from an original value to a lower value.
Discount Calculator
Find sale prices and savings from a discount percent.
FAQ
Use percentage difference when comparing two values and neither one is clearly the original or starting value.
The average gives a neutral reference point, so the result is the same no matter which value you enter first.