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Percentage Calculator

Calculate percentages, percentage changes, and solve percentage problems.

Calculate Percentages

Basic Percentage

What percentage is X of Y?

Formula: (X ÷ Y) × 100

Quick Reference

Common Percentage Calculations

10% of 10010
25% of 20050
50% of 8040
75% of 12090

Percentage to Decimal

1% = 0.0110% = 0.10
25% = 0.2550% = 0.50
75% = 0.75100% = 1.00

Percentage to Fraction

10% = 1/1020% = 1/5
25% = 1/450% = 1/2
75% = 3/4100% = 1/1

Tips

  • • To find 10%, move decimal point one place left
  • • To find 1%, move decimal point two places left
  • • 50% is always half of the number
  • • 25% is one quarter of the number
  • • 75% is three quarters of the number