Calculate Percentage Off

If you want to calculate the result of taking a set percentage off a number this is how you do it! You can use the percentage off calculator below to work out your figures if you are looking for a quick answer, below the calculator you will also find the workings behind the answer and the percentage off formula.

Percentage Off Calculator

Final Amount: 240

How to work out a percentage off

Here is the method for working out what the result is from taking a set percentage off an amount. A is the initial value and B is the number of percent you want to take off:

  1. Work out what 1% of the original amount (A) is - we'll call this value C, to do this just divide it by 100: C (1%) = A / 100
  2. Multiplying this by the number of percent you want to take off (B) : C × B = Amount to reduce
  3. This gives you the value of the reduction.
  4. Subtract the reduction from the original amount to show the new value.

With the figures above you would do the following:
320 ÷ 100 = 3.2 (1% of the initial amount) So: 3.2 × 25 = 80 Then: 32080 = 240. In other words, 25% off 320 is 240.