X is What Percent of Y Calculator
Calculate what percentage one number is of another with our free percentage finder.
= 0%
How to Calculate What Percent X is of Y
Formula
(X/Y) × 100
To find what percentage X is of Y, divide X by Y and multiply by 100. This calculation shows what portion or percentage X represents when compared to Y as a whole.
Step-by-Step Example
Example: What percent is 30 of 150?
- Identify your values:
- X = 30 (the part you're comparing)
- Y = 150 (the total or whole amount)
- Divide X by Y:
30 ÷ 150 = 0.2 - Multiply by 100:
0.2 × 100 = 20 - Therefore, 30 is 20% of 150
Common Use Cases
- Academic performance (correct answers out of total questions)
- Business metrics (sales achieved vs sales target)
- Progress tracking (tasks completed vs total tasks)
- Budget analysis (amount spent vs total budget)
- Health statistics (success rates, recovery percentages)
- Sports statistics (win rates, accuracy percentages)
Tips for Accurate Calculations
- Ensure X (part) is smaller than or equal to Y (whole)
- Keep track of decimal places for precise results
- Convert fractions to decimals before calculating
- Verify your answer makes logical sense
- Consider using rounded numbers for simpler calculations
Common Percentage Values Reference
| Part of Whole | Decimal | Percentage |
|---|---|---|
| 15 of 100 | 0.15 | 15% |
| 25 of 50 | 0.5 | 50% |
| 75 of 100 | 0.75 | 75% |
| 20 of 60 | 0.333... | 33.33...% |
| 40 of 60 | 0.666... | 66.66...% |