Instant calculator
Percentage Change Calculator
Use the percentage change calculator to compare an original value and a new value, then see the absolute and percentage difference instantly.
How to use
Quick steps
- Enter original value, new value.
- Review the instant answer block and supporting calculations.
- Compare the result with related tools in the same category before making a decision.
Formula
How this calculator works
Percentage change = (new value - old value) / old value x 100
If the original value is zero, percentage change is not defined in the standard way.
FAQ
Common questions
How does the percentage change calculator work?
It uses Percentage change = (new value - old value) / old value x 100. Enter original value, and new value to generate an instant estimate.
When should I use this percentage change calculator?
Measure percentage increase or decrease between two numbers.
What should I keep in mind?
If the original value is zero, percentage change is not defined in the standard way.