Why is the percent increase from 45 to 75 not equal to the percent decrease from 75 to 45? Select three options.

Both changes are 30, but percent change is measured relative to the starting amount. The increase is 30 ÷ 45 = 2/3, while the decrease is 30 ÷ 75 = 2/5, so the ratios differ. The increase uses the smaller denominator, and the original amounts are different; the numerators are the same, so A and D do not apply.

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