Percentage Calculator - Percent Increase & Change Calculator
The fastest online percent calculator. Calculate 'What is X% of Y?', percentage increase/decrease, discount prices (percent off), and percentage change between two values. Perfect for shopping, business, and daily math.
Percentage Calculator
Discount Calculator (Calculate Percent Off)
Percentage Change & Difference Calculator
Frequently Asked Questions about Percent & Discount Calculation
Q. How do I calculate a percentage on a calculator?
To find the percentage of a number on a calculator, multiply the original value by the percentage and then divide by 100. For example, to find 20% of 1,000, enter 1000 * 20 / 100 to get 200. Our tool automates this for you instantly.
Q. How to calculate percentage of increase?
To calculate the percentage increase between two values, subtract the old value from the new value, divide the result by the old value, and then multiply by 100. Formula: ((New - Old) / Old) * 100. A positive result indicates an increase.
Q. How do I calculate percent off for shopping?
To find a sale price, multiply the original price by the discount rate (as a decimal) and subtract that from the original price. For 20% off $100, calculate 100 - (100 * 0.20) = $80. You can also multiply by the remaining percentage: 100 * 0.80 = $80.
Q. What is the difference between percentage change and percentage point?
Percentage change measures the relative change between two values (e.g., from 10% to 12% is a 20% increase). A percentage point is the simple arithmetic difference (e.g., from 10% to 12% is a 2 percentage point increase).