How to use this calculator
Calculate percentage difference, which compares the absolute difference between two values against their average.
How the calculation works
- Enter value A and value B.
- The absolute difference is calculated.
- The difference is divided by the average of the two absolute values.
Formula
Percentage difference = |A - B| / ((|A| + |B|) / 2) x 100.
Example
The percentage difference between 80 and 100 is about 22.22%.
Understanding your result
Use the output as a practical starting point, then review it before using it in an important workflow.
Assumptions and limitations
- This is different from percentage increase, which uses the original value as the base.
- If both values are zero, the result is undefined.
Frequently asked questions
Does this require an account?
No. The core tool works without creating a Tool2Do account.
Is my input included in share links or analytics?
No. Tool2Do share actions use the tool page URL and safe metadata, not private values or uploaded files.