To use a percentage calculator, you need to know the numbers you want to calculate the percentage for and the percentage you want to calculate.
For example, if you want to calculate 20% of 60, you would enter 60 as the number and 20 as the percentage in the calculator. The calculator would then perform the calculation and show the result, which would be 12.
Percentage calculators can be used for various purposes, such as calculating discounts, interest rates, and grades. Some calculators may have additional features, such as calculating percentage increase or decrease or converting between different percentage units.
You can find percentage calculators online, or you can use a calculator app on your smartphone or computer. Some calculators may be specific to a particular purpose, such as a discount calculator or a grade calculator, while others may be more general-purpose.