Final answer:
The percent decrease is 28%.
Step-by-step explanation:
The percent decrease can be calculated using the formula:
Percent decrease = [(change in amount) / (original amount)] × 100
Given that the original amount is 25 and the new amount is 18, the change in amount is 25 - 18 = 7.
Plugging these values into the formula:
Percent decrease = [(7)/(25)] × 100
= 28%