Kelly writes blockbuster novels and has a picnic each year to celebrate the date of her first published work. The 1st year fifty people came. The 2nd year thirty people came. By what percent did the picnic attendance change?
To calculate the percent change in picnic attendance, we first need to determine the total attendance for each year.
1st year: 50 people
2nd year: 30 people
To calculate the percent change, we use the formula:
((Final value - Initial value) / Initial value) * 100
For the first year:
((30 - 50) / 50) * 100 = (-20 / 50) * 100 = -0.4 * 100 = -40%
Therefore, the picnic attendance decreased by 40% from the 1st year to the 2nd year.