Percentage Calculator
Calculate percentages instantly. Find X% of Y, what percent X is of Y, or percentage change.
Percentage (for mode 1) or Part/Original value
Number (for mode 1) or Whole/New value
How to Use This Calculator
1. Select your calculation type from the dropdown 2. Enter your values in the input fields 3. Click Calculate to see your result instantly
Modes:
Formula
Percentage = (Part / Whole) × 100 | Result = (Percentage / 100) × NumberFrequently Asked Questions
How do I calculate a percentage of a number?
Divide the percentage by 100, then multiply by the number. For example, 20% of 150 = (20/100) × 150 = 30.
How do I find what percentage one number is of another?
Divide the part by the whole, then multiply by 100. For example, 30 is what percent of 150? (30/150) × 100 = 20%.
How do I calculate percentage increase or decrease?
Subtract the original value from the new value, divide by the original, then multiply by 100. A change from 100 to 125 = ((125-100)/100) × 100 = 25% increase.
Is this calculator free to use?
Yes, this percentage calculator is 100% free. No signup required.