Online Percentage Calculator

Percentage Calculator is a free online tool that allows you to make quick and accurate calculations related to percentages easily.

Percentage increases and discounts

With these markup and markdown calculators, you’ll be able to quickly determine the new price after applying any percentage markup or discount.

What is a percentage?

In mathematics, a percentage is a number or ratio that represents a fraction of 100. It is one of the ways to represent a dimensionless relationship between two numbers; Other methods include proportions, fractions, and decimals.

Percentages are usually indicated by the symbol (%), but are sometimes denoted by (pct) written after the number.

How to calculate a percentage?

To calculate the percentage of a number we must multiply the figure by the desired percentage and divide everything by 100. For example, if we want to know how much 30% of 450 is, we just have to multiply 30 x 450 and divide the result by 100, which which shows that 30% of 450 is 135.

Another way to approach this operation is to establish a rule of 3, as follows:

Example: In a class of 80 students, 20 are women. We calculate the percentage of women applying a rule of three.

A percentage calculator operates using the following formulas:

1. Percentage calculation: Percentage (%) = (Value/Total Value) ×100
   • If we know the percentage and the total value, and we need to find the exact value corresponding to that percentage.

2. Percentage increase or decrease: Percentage change = ((New value – Old value) / Old value) * 100

A percentage calculator simplifies these calculations by taking user input, applying appropriate formulas, and providing instant results.

How to use the percentage calculator

Each percentage calculator has specific input fields, an output and buttons to calculate or display the corresponding mathematical operation.

Write the values ​​in the input boxes and press calculate to see the result in the output box. When you press calculation steps, a window opens showing step by step how to obtain the percentage in a mathematical operation.

Percent Calculator (%)

In conclusion, a percentage calculator is a powerful tool that plays a vital role in various aspects of our life, from personal to professional. By simplifying percentage calculations and providing quick results.