About the percentage change calculator
Find the percentage increase or decrease between an original value and a new value. This tool is designed to provide a quick estimate with clear, easy-to-understand results. It runs in your browser and does not require you to create an account.
How the calculation works
Percentage change = (new value − original value) ÷ original value × 100.
Example
Moving from 100 to 125 is a 25% increase.
When should you use it?
Use this calculator for planning, checking estimates, comparing options, and understanding the effect of different input values. Results depend on the information you enter and may not include fees, exceptions, or local rules that are not explicitly represented.