20 plus 4 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 B percent to an A amount, you can use the following formula:
End Value = A + (B100 × A )Where: A represents the start or inicial value and B the percent we want to add. See the example below:
How to increase or add 4% to 20?
Plugging the values in the formula above:
End Value = 20 + (4 100 × 20)
End Value = 20 + (0.04 × 20)
End Value = 20 + (0.8)
End Value = 20.8 (Answer).
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 B percent from an A amount, you can use the following formula:
End Value = A - (B100 × A )Where: A represents the start or inicial value and B the percent we want to subtract. See the example below:
How to decreasee or subtract 4% to 20?
Plugging the values in the formula above:
End Value = 20 - (4100 × 20 )
End Value = 20 - (0.04 × 20)
End Value = 20 - (0.8)
End Value = 19.2 (Answer).
To find more examples, just choose one at the bottom of this page.