Percent Change:

40 %

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How to calculate percent change between 20 and 28

Using the formula for percentage change, and following the order of operations

  1. Subtract (28 - 20) which gives you: 8
  2. Divide 8 / 20 which gives you: 0.4000000000
  3. Multiply 0.4000000000 * 100 = 40