Percent Change:

-20 %

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How to calculate percent change between 50 and 40

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

  1. Subtract (40 - 50) which gives you: -10
  2. Divide -10 / 50 which gives you: -0.2000000000
  3. Multiply -0.2000000000 * 100 = -20