Percentage Calculations
X% of Y
Find what a percentage of a number equals.- Example: 15% of 200 = 30
X is what % of Y
Find what percentage one number is of another.- Example: 30 is 15% of 200
Percentage Change
Calculate the percent increase or decrease between two values.- Example: 100 to 125 = 25% increase
Increase/Decrease by %
Add or subtract a percentage from a value.- Example: 100 + 20% = 120
Tip Calculator
Common tip percentages:
| Service Level | Tip % |
|---|---|
| Poor | 10% |
| Adequate | 15% |
| Good | 18% |
| Great | 20% |
| Exceptional | 25%+ |