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26 September, 01:16

Explain why a change from 20 to 40 is a 100 percent increase, but a change from 40 to 20 is a 50 percent decrease

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  1. 26 September, 01:32
    0
    40 = 2 times 20

    20 = 40/2
  2. 26 September, 01:38
    0
    You are multiplying all of 20 which is 100% and your dividing only half of 40 which is 50%
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