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Decrease by 40% => multiplier = 1 - 40/100) = 0.60So the answer is 80*0.6 = 48.

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40% of 80 is 32.

Therefore: 80 - 32 = 48

Multiply 80 by 0.6

Q: How do you decrease 80 by 40 percent?

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20% decrease.

The decrease from 80 to 64: 20%

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40%% change =|original value - new value|/original value * 100%= |80 - 48|/80 * 100%= 32/80 * 100%= 0.40 * 100%= 40% (decrease)

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