Final answer:
The percent change in the total amount raised by the girl's club is 60%.
Step-by-step explanation:
To find the percent change in the total amount raised by the girl's club, we need to calculate the difference between the amounts raised this year and last year, and then divide that difference by the amount raised last year. Finally, we multiply the quotient by 100 to express it as a percentage.
The formula for calculating percent change is:
Percent change = (New Value - Old Value) / Old Value * 100
Using this formula, we can calculate the percent change as follows:
Percent change = ($960 - $600) / $600 * 100 = 60%