The percent error to the nearest tenth of a percent is 16.67%.
Percent error
Using this formula
Percent error=Actual attendance -Estimated attendance/Actual attendance
Let plug in the formula
Percent error=240-200/240
Percent error=40/240
Percent error=0.1667×100
Percent error=16.67%
Inconclusion the percent error to the nearest tenth of a percent is 16.67%.
Learn more about percent error here:https://brainly.com/question/5493941