Percentage Calculator
Three modes: find X% of Y, what percent X is of Y, or the percentage change between two values.
Common Percentage Reference
| Fraction | Decimal | Percent |
|---|---|---|
| 1/8 | 0.125 | 12.5% |
| 1/6 | 0.1667 | 16.67% |
| 1/4 | 0.25 | 25% |
| 1/3 | 0.3333 | 33.33% |
| 1/2 | 0.5 | 50% |
| 2/3 | 0.6667 | 66.67% |
| 3/4 | 0.75 | 75% |
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Everything you need to know
Three Ways to Use It
Need to find 15% of 230? Or figure out what percentage 45 is of 200? Maybe you want to know the percentage change between two numbers? This calculator handles all three — just pick the mode you need and plug in your numbers.
Percentage Change
The formula is ((New – Old) / Old) × 100. Positive means it went up, negative means it went down. Pretty straightforward. We show you the direction with a clear arrow so there's no confusion.
When Would You Actually Use This?
Discounts while shopping, grade calculations, comparing prices, figuring out salary raises, analyzing data — percentages pop up everywhere. Bookmark this one, you'll come back to it.
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