A survey of Ghasi’s customers showed that 1,200 of the customers buying yarn would buy bamboo yarn. In the first month, 725 customers actually bought bamboo yarn. What was the percent error in the survey estimate of the number of people buying bamboo yarn? Round to the nearest tenth.

Percent error is the absolute difference between the estimate and the actual value, divided by the actual value, then multiplied by 100. The difference is 1,200 − 725 = 475, so the percent error is (475 ÷ 725) × 100 ≈ 65.5%. The correct choice is 65.5%.

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