**Percentage calculator to increase or decrease percent**. Enter a price, value or percent in any way you want it.

Why did the math teacher divide by 100 with glee? To find the percentage, don’t you see! It’s not rocket science, just simple math, Just move the decimal, that’s all you have!

## Calculate percentage increase or decrease

## Change price and see value in percentage %

## How do you calculate percentage?

To calculate a percentage, you need to know three values: the whole or total amount, the part or the value you are interested in, and the percentage rate. The formula to calculate a percentage is:

(part/total) x 100 = percentage

Here’s an example: Let’s say you want to know what percentage of 100 apples are spoiled. You find out that 20 apples are spoiled.

To calculate the percentage of spoiled apples, you would use the following formula:

(20/100) x 100 = 20%

So in this example, 20% of the apples are spoiled.

Another example : Let’s say you scored 80 out of 100 on a test, and you want to know what percentage you got.

To calculate the percentage, you would use the following formula:

(80/100) x 100 = 80%

So in this example, you got 80% on the test.

It’s important to note that when using the formula, the percentage will always be out of 100. So, a percentage of 20% means 20 out of 100, and a percentage of 80% means 80 out of 100.