Percentage Decrease Calculator.

A little context.

Percentage decrease = (original − new) / original × 100. The original must be positive. A negative result indicates an increase.

Try an example

How to use this tool

1. Enter original value, new value in the workspace above.
2. Select Run tool to process your input. Invalid values produce a message next to the form.
3. Copy the result or download it as a file. Reset example restores the original input.