The percent error of the number of people who attended the event is 37.5
What is percent error ?
The difference between the estimated and actual values, as compared to the actual values, is called the percent error and is represented as a percentage. Stated otherwise, the percent error is equal to the relative error times 100.
estimated number =50 people
people that showed up=80 people
Difference= 80 people -50 people =30 people
The percent error =30/80* 100
=0.375* 100
=37.5