Learn how to calculate the percentage of any number. Formula: (Percentage ÷ 100) × Number. With 12 examples, common tricks and real-world applications.
Formula: Percentage of a number = (% ÷ 100) × Number. Example: 25% of 80 = (25÷100) × 80 = 0.25 × 80 = 20. Quick trick: 10% = move decimal one place left. 25% = divide by 4.
| Percentage | Trick | Example |
|---|---|---|
| 10% | Move decimal one place left | 10% of 340 = 34 |
| 20% | 10% × 2 | 20% of 340 = 68 |
| 25% | Divide by 4 | 25% of 80 = 20 |
| 50% | Divide by 2 | 50% of 340 = 170 |
| 75% | 50% + 25% | 75% of 80 = 60 |
| 1% | Move decimal two places left | 1% of 500 = 5 |