Percentage Calculator
Calculate percentages quickly and easily. Get step-by-step solutions for percentage calculations, including percentage of numbers, percentage changes, and percentage differences.
Basic Percentage
Percentage Change
Percentage Difference
Understanding Percentages
A percentage represents a fraction of 100, making it easier to compare relative values. The symbol % means "per hundred" - for example, 50% means 50 per 100, or one-half.
Basic Percentage
To calculate X% of Y:
Formula: (X × Y) ÷ 100
Example: 15% of 80 = (15 × 80) ÷ 100 = 12
Percentage Change
To calculate % change:
Formula: ((New - Original) ÷ Original) × 100
Example: From 50 to 75 = ((75 - 50) ÷ 50) × 100 = 50% increase
Percentage Difference
To calculate % difference:
Formula: (|A - B| ÷ ((A + B) ÷ 2)) × 100
Example: Between 40 and 60 = (|60 - 40| ÷ ((60 + 40) ÷ 2)) × 100 = 40%