# Percentage Calculator

Free online Percentage Calculator. This free percentage calculator computes a number of values involving percentages, including the percentage difference between two given values. Calculate a percent of a value before and after, or find the percentage change between two values, and see how to calculate each one. You will also find a copy of the formula, as you might need it to use it yourself. It's easy to calculate it.

**What is the Percentage Calculator?**

A percentage calculator is a tool that helps you quickly and easily calculate percentages. It can be a physical calculator or a digital tool (such as an online calculator or a calculator app) that allows you to input numbers and perform calculations involving percentages.

A percentage calculator typically includes the basic mathematical functions required to calculate percentages, such as addition, subtraction, multiplication, and division. Some percentage calculators also include advanced features like memory functions, a history of previous calculations, and the ability to perform calculations involving multiple numbers or variables.

**How do I calculate a percentage?**

To calculate a percentage, you can use the following formula:

(part/whole) x 100 = percentage

Where "part" is the value you're trying to express as a percentage of the "whole" value.

For example, if you have 10 apples and you want to know what percentage of a total of 20 apples represents:

(10 / 20) x 100 = 50

So 10 apples represent 50% of 20 apples.

Another example, if you want to find out what percentage a number represents of a total, you can divide the number by the total and then multiply by 100. For example, if you want to know what percentage 40 is of 200:

(40/200) x 100 = 20%

You can also use online calculators or a calculator that has a percentage button to calculate the percentage.

It's important to note that the percentage is always out of 100, and the whole value is usually assumed to be 100.