Welcome to Percentage Calculator

How to work out the value of a percentage of an amount

The method to calculate what the value of a set percentage (A) is of an amount (B) can be completed like this:

1. Find out what 1% of the the the whole amount (B) is - to do this you divide it by 100.
2. Once you know the value of 1% you can multiply this amount by the number of percent you want to find.
3. If you want to find 10% of 50 you divide 50 by 100.
4. From this you know that 1% of 50 is 0.5
5. So to find 10% you just multiply 0.5 by 10
6. 0.5 x 10 = 5
7. 10% of 50 = 5

When working out what the value of a set percentage (A) is of an amount (B) you just need to remember that B is the whole amount - it is 100%. So to find 1% you just divide it by 100. Once you have the value of 1% you can multiply it by the number of percent you want to find.

With the figures above you would do the following:
(90 / 100) x 6 = 5.4

How to work out what percentage an amount is

To work out what the percentage value an amount (A) is of another amount (B) you can do it this way:

1. The amount B is the full amount - it is 100%.
2. Dividing the value you want show as a percentage by the total will give you a decimal version of the percentage.
3. Multiplying the decimal value by 100 will show it as a percentage.

It is helpful to think of an easy example to make sure you get the division the right way around. If you want to work out what percentage 1 is of 100 then dividing 100 by 1 would give you 100 so that is the wrong way! Dividing 1 by 100 gives the decimal representation of 1%:

1 ÷ 100 = 0.01

When you multiply this by 100 you are back to 1 - 1% of 100 = 1.

With the figures in the calc above you would do the following:
(60 / 240) x 100 = 25%