Formula: (percentage / 100) * number = result
Formula: (part / whole) * 100 = percentage
Formula: ((new - old) / old) * 100 = % increase
Formula: ((old - new) / old) * 100 = % decrease
Formula: ((new - old) / |old|) * 100 = % change
Percentage Calculator
Calculate percentages, percentage increase and decrease, what percent one number is of another, and percentage change. Free online tool.
Frequently Asked Questions
To calculate X% of a number: multiply the number by X, then divide by 100. For example, 20% of 150 = (150 * 20) / 100 = 30.
Subtract the original value from the new value, divide by the original value, then multiply by 100. For example, from 100 to 150: ((150-100)/100)*100 = 50% increase.
Yes, completely free. No signup required. Use it as many times as you need.