# Percentage Calculator

Use this *Percentage Calculator* to quickly solve percentages 📊 in different perspectives. You may want to figure out an actual value derived from percentage, or get an equivalent percentage from given number or a percentage increase or decrease. Use this tool to figure these things quickly.

## Percentage Formula

The percentage is a representation of a fraction number or a part of a whole value where the maximum value is 100, thus referred to as 100% which means the completeness of the whole value.

Say for example you have a pizza where it is sliced into 10 pieces. The whole pizza represents the 100% value, while each slice of pizza represents the 10% since it is sliced evenly into 10 pieces.

The formula of percentage calculation is simply:

`Percentage = `^{X}_{Y}✖️ 100

` Where: `

X = the part

Y = the whole

## How to Use the Percentage Calculator

### What is __ % of __?

There are five (5) percentage calculator forms here, the first one is a percentage calculator where you need to get a definite number from the percentage of a base value. Use this form if you want to get the result of similar to this calculation, 4% of 10. Here's a step by step guide.

- Step 1
In the first input field, enter a percentage. (base from example above, the default value is

`4%`

) - Step 2
On the second input field, add the base value where you want to take the percentage from which is the whole value. (The default whole value is set to

`10`

) - Step 3
Click the

*Calculate*button and the answer will be displayed in this case 0.4. So, the 4% of 10 is equals to 0.4.

The formula for this calculation is `Y = Percentage * X`

. In here we are looking for the value of part(Y) against the given `percentage (4%)`

and the given `whole value`

(X which is equals to 10).

### The number __ is __ % of what number?

This is the second calculator you can find above. The purpose of this calculator is finding the whole value, which is the equivalent of whole value (100%) where the `part`

is given and the `percentage`

is also given.

- Step 1
In the first input field, enter the fraction or part value, let's call it the X value following our main percentage formula above.

(The default above is number`4`

). - Step 2
Then enter the percentage equivalent of that part, the P%. (The default value above is set to

`10%`

). - Step 3
Click the

*Calculate*button and the answer will be displayed which represents the whole value (Y), in this case`40`

.

The formula for this calculation is `Y = ( X / Percentage ) * 100`

.

### What is the percentage of number __ against number __?

The third calculator is a percentage equivalent calculator. Use this calculator if you want to figure out the percentage when you take a defined number from a whole value. Say you want to get the percentage equivalent of 4 from the whole value of 10, here's a step by step guide.

- Step 1
In the first input field, enter the fraction or part you want to take from the whole number (The example value above is set to

`4`

). - Step 2
On the second input field, add the whole number that will act as the whole value, you can also call it base value. (Although the default value is set to 10, you can always change it according to your inputs).

- Step 3
Click the

*Calculate*button to get the actual percentage of value taken. So the fraction value`4`

from the whole number of`10`

is equivalent to`40%`

of the actual whole value.

The formula for this calculation is `Percentage = ( X / Y ) * 100`

.

## How to Use The Percentage Increase/Decrease Calculator

The last calculator is the percentage decrease calculator where you can use to quickly figure out the increase 📈 or decrease 📉 of the number from the previous value. So, if you want to get the percentage increase of 4 from 10, here's a step by step guide.

- Step 1
In the first input field, enter starting or initial value (The default value above is set to 4).

- Step 2
On the second input field, enter the ending or final value (while the default value is set to 10, you can always change these fields).

- Step 3
Click the

*Calculate*button to get the actual percentage increase or decrease derived from the staring value to the ending value. So following the example above, the answer should be 150%.

The formula for this percentage increase/decrease or it's commonly referred to as percentage change is: `Percentage Change = ((Final Value - Initial Value) / Initial Value) * 100`

## Percentage Calculator Tutorial

The percentage calculators above and written instructions seems a pretty long read. Though it can be easily understood, here's a better way of explaining things found on this video tutorial.