Example: Change from 80 to 100 +25%. Change the values above to calculate your own.
About the Percentage Change Calculator
Enter the starting value as X and the new value as Y. A positive result is an increase; a negative result is a decrease.
How to use the Percentage Change Calculator
- Enter your numbers (or keep the example).
- The result updates instantly as you type.
- Copy the result, or copy the link: it keeps your numbers so you can share them.
Common percentages of 100, 250 and 1,000
| Percent | of 100 | of 250 | of 1,000 |
|---|---|---|---|
| 1% | 1 | 2.5 | 10 |
| 5% | 5 | 12.5 | 50 |
| 10% | 10 | 25 | 100 |
| 12.5% | 12.5 | 31.25 | 125 |
| 15% | 15 | 37.5 | 150 |
| 20% | 20 | 50 | 200 |
| 25% | 25 | 62.5 | 250 |
| 30% | 30 | 75 | 300 |
| 33.33% | 33.33 | 83.325 | 333.3 |
| 40% | 40 | 100 | 400 |
| 50% | 50 | 125 | 500 |
| 75% | 75 | 187.5 | 750 |
How it's calculated
Percentage change = (Y − X) ÷ |X| × 100.
Features
- Instant resultsUpdates as you type.
- Shareable linkThe URL keeps your inputs.
- Reference tableCommon values on this page.
- Works offlineRuns in your browser.
Frequently asked questions
Is the Percentage Change Calculator free?
Yes, the Percentage Change Calculator is free with no sign-up, no limits and no ads covering the result.
Does it work on my phone?
Yes. It works in any modern browser on phones, tablets and computers, and keeps working offline once the page has loaded.
Last updated · Processing happens locally in your browser.