How to Calculate a Percentage of Any Number
The one formula behind every percentage question, with worked examples you can check in seconds.
3 min read
Step by step
- Write the percentage as a decimal by dividing it by 100 (20% becomes 0.20).
- Multiply that decimal by the number you started with.
- Example: 20% of 150 = 0.20 x 150 = 30.
- To reverse it, divide the part by the whole and multiply by 100.
Key takeaway: Percent of a number is always (percent ÷ 100) × number.
Do it automatically
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