Percentage change
This tool calculates `(new − old) ÷ |old| × 100` and labels the direction. The complete operation runs in temporary browser memory, so the input is never uploaded or stored by LocalKit.
Local processing
Result
Your result will appear here
The input stays available if you need to adjust a setting.
How to use percentage change
- 1
Add the source values or files shown in the workbench.
- 2
Choose the settings for percentage change.
- 3
Run the tool, inspect the local result, then copy or download it.
A realistic example
Measure the change from 80 to 100 as a 25% increase. The source and generated result remain in this browser tab throughout the operation.
Supported formats and limits
Input: decimal numbers. Output: percentage and absolute change.
- Percentage change is undefined when the old value is zero.
- Available memory and browser limits still apply to very large inputs.
Questions people ask
What does percentage change change?
This tool calculates `(new − old) ÷ |old| × 100` and labels the direction.
Is any input sent to a server?
No. LocalKit performs this operation in your current browser tab.