📊 Percentage Calculator
Calculate percentages, increases, decreases, and percentage differences with step-by-step explanations.
Percentage Calculation Examples
What percentage is X of Y?
Formula: (X ÷ Y) × 100
Example: What percentage is 25 of 100? (25 ÷ 100) × 100 = 25%
Increase X by Y%
Formula: X + (X × Y ÷ 100)
Example: Increase 100 by 20% = 100 + (100 × 20 ÷ 100) = 120
Decrease X by Y%
Formula: X - (X × Y ÷ 100)
Example: Decrease 100 by 20% = 100 - (100 × 20 ÷ 100) = 80
What is Y% of X?
Formula: (X × Y) ÷ 100
Example: What is 20% of 100? (100 × 20) ÷ 100 = 20