Percentage Calculator
Find what percentage one number is of another, or calculate increases and decreases.
Calculate
Calculate
Result
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The formula
To find what percentage X is of Y, divide X by Y and multiply by 100.
Result = (Part ÷ Whole) × 100
Worked example
- Divide 25 by 200 → 0.125
- Multiply by 100 → 12.5%
Result: 12.5%
Interesting facts
From Latin
“Percent” comes from per centum — “by the hundred” in Latin.
Frequently asked questions
New minus old, divide by old, multiply by 100.