64 is 80% of 80
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Sixty-four
Negative sixty-four minus four squared is equal to -80.
Adding four percent to a number is the same as multiplying the number by 1.04. In this instance, 1.04 x 80 = 83.2. therefore, 80 increased by 4 percent is equal to 83.2.
To find 80 percent of a number, multiply the number by 0.8. In this instance, 54 x 0.8 = 43.2. Therefore, 80 percent of 54 is equal to 43.2.
Multiply the number by .8 to get 80% of that number.