Percentage Calculator

Calculate percentages, percentage changes, and percentage of numbers

What is X% of Y?

Percentage (%):

Of Number:

Result: 0

X is what % of Y?

Number:

Total:

Result: 0%

Percentage Change

Original Value:

New Value:

Change: 0%

X is Y% of what?

Number:

Percentage (%):

Total: 0

Advanced Calculations

Percentage Increase/Decrease

Result: 0

Compound Percentage

Final: 0

Percentage Points

Difference: 0 points

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Quick Reference

Common Percentages:

10% = 0.1
25% = 0.25 (1/4)
50% = 0.5 (1/2)
75% = 0.75 (3/4)
100% = 1.0

Formulas:

X% of Y = (X/100) × Y
X is Y% of = X ÷ (Y/100)
% Change = ((New-Old)/Old) × 100

Tips

Use decimals for precise calculations
Percentage points ≠ percentage change
Negative change = decrease
Positive change = increase