Percentage Calculator
Calculate percentages easily for marks, discounts, increases, and more. Essential tool for students and everyday calculations.
What is X% of Y?
X is what % of Y?
Percentage Increase/Decrease
Marks Percentage Calculator
How to Calculate Percentages
Basic Percentage Formula
Percentage = (Part / Whole) × 100
Common Percentage Calculations
| Calculation | Formula | Example |
|---|---|---|
| X% of Y | (X/100) × Y | 25% of 200 = 50 |
| X is what % of Y | (X/Y) × 100 | 50 is 25% of 200 |
| Percentage Increase | ((New-Old)/Old) × 100 | (120-100)/100 × 100 = 20% |
| Marks Percentage | (Obtained/Total) × 100 | 450/500 × 100 = 90% |
Quick Reference
- 10% = 1/10 (divide by 10)
- 25% = 1/4 (divide by 4)
- 33.33% = 1/3 (divide by 3)
- 50% = 1/2 (divide by 2)
- 75% = 3/4
