Percentage calculator
Calculate percentages, discounts and percentage change.
How to use: percentage calculator
Three common calculations: find X% of an amount (for example a discount), work out what percentage one number is of another, and calculate the percentage increase or decrease between two values.
How do I calculate a discount?
Multiply the price by the percentage and divide by 100. 20% of €150 is €30, so you would pay €120.
How do I calculate percentage change?
Subtract the starting value from the final one, divide by the starting value and multiply by 100. From 80 to 100 is a 25% increase.