Answer: 24%
Explanation:
The total number of people at the party is:
128 + 96 + 72 + 52 + 24 + 28 = 400
The number of people who wore Decades-themed costumes is 96. To find the percentage, we can set up a proportion:
(96/400) = (x/100)
Solving for x, we get:
x = 24
Therefore, the Decade's slice of the circle graph would represent 24% of the total. So the correct answer is 24%.