Christopher drove 360 miles this week. last week he drove 480 mile. what is the percent decrease in the number of miles christopher drove this week compared to last week

Last week, Christopher drove 480 miles

This week, Christopher drove 360 miles

The difference in miles this week compared to last week = 480 - 360 = 120 miles.

The percentage of decrease in miles compared to last week's = (Difference in miles : Total miles last week) multiplied by 100 = (120 : 480) x 100 = 0.25 x 100 = 25%