How to calculate a percentage
A percentage of a number is the number times the percentage divided by 100. To find what percent one number is of another, divide the part by the whole and multiply by 100.
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The formula
Part = whole × percent ÷ 100. Percent = part ÷ whole × 100. Change = (new − old) ÷ old × 100.
Step by step
- Decide which of the three cases you have.
- Write down the whole, the part or the old and new values.
- Apply the matching formula.
- Check the answer looks sensible against 10% of the same number.
Worked example
15% of 240, and 36 as a percentage of 240
- 240 × 15 ÷ 100 = 36
- 36 ÷ 240 × 100 = 15
15% of 240 is 36, and 36 is 15% of 240.
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APA
Free Calculator. (n.d.). How to calculate a percentage. https://freecalculator.tech/guides/how-to-calculate-a-percentage
MLA
"How to calculate a percentage." Free Calculator, https://freecalculator.tech/guides/how-to-calculate-a-percentage.
Link
How to calculate a percentage — Free Calculator, https://freecalculator.tech/guides/how-to-calculate-a-percentage