Percentage Increase / Decrease Calculator
Use a browser-based percentage increase and decrease calculator to measure change between two values and understand the direction and size of the difference.
Use Percentage Increase / Decrease Calculator
Details, guidance, and common questions
The working tool stays first. Open these sections only when you need more context.
Percentage change is easier to understand when direction is explicit
Percent change is used in pricing, reporting, budgeting, analytics, grades, and performance tracking where the direction of the change matters as much as the size.
This dedicated calculator focuses only on increase and decrease so the result is easier to read and explain than a more general percentage page.
Helpful tips for a better result
- Use the original value as the comparison base, not the new one.
- Check the absolute change too if the percentage looks larger or smaller than expected.
- Use the general percentage calculator for other percent-of or reverse-percentage tasks.
Frequently asked questions
Does this show both increase and decrease?
Yes. The calculator identifies whether the result is an increase, decrease, or no change.
What values do I enter?
Enter the original value and the new value you want to compare against it.
Is this useful for prices and analytics?
Yes. It is useful for pricing, grade changes, growth tracking, reporting, and many other comparison tasks.