How to calculate percentage of a number?
To find a percentage of a number, convert the percentage to a decimal (by dividing by 100) and multiply that decimal by the number. This is one of the most common daily math tasks for tips, taxes, and parts of a whole.
Formula
Result = Number × (Percentage ÷ 100)
Worked Example
What is 15% of 200?
- Convert %: 15 ÷ 100 = 0.15
- Multiply: 200 × 0.15 = 30
Result: 15% of 200 is 30.
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