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# 9000 plus 25 percent

## How to add a percentage to a number - Step by Step

To add a percentage (%) to a number, i.e., If you want to add a y percent to an x amount, you can use the following formula:

End Value = x + (( y / 100) * x )

Where: x represents the start or inicial value and y the percent we want to add. See the example below:

### How to increase or add 25% to 9000?

Plugging the values in the formula above:

End Value = 9000 + (( 25 / 100 ) x 9000)

End Value = 9000 + (( 0.25 ) x 9000 )

End Value = 9000 + ( 2250 )

## How to subtract a percentage from a number - Step by Step

To subtract a percentage (%) from a number, i.e., If you want to subtract a y percent to an x amount, you can use the following formula:

End Value = x - (( y / 100) * x )

Where: x represents the start or inicial value and y the percent we want to subtract. See the example below:

### How to decreasee or subtract 25% to 9000?

Plugging the values in the formula above:

End Value = 9000 - (( 25 / 100 ) x 9000 )

End Value = 9000 - (( 0.25 ) x 9000 )

End Value = 9000 - ( 2250 )