A count went from 605 to 203 What was the approximate percent decrease? Round the numbers to find an estimate of the percent decrease.

The decrease was 605 − 203 = 402. Rounding to 600 and 200 gives an estimated decrease of 400 out of 600, or about 400 ÷ 600 = 0.667 = 66.7%. So the percent decrease was approximately 66 percent.

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