Mathematics, 22.11.2019 16:31, wannaoneisforever

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

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

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