Question

Of the 8760 hours in a year, one television was on for 438 hours. What percent is this?

Answer 1

438/87600 = 0.05 <--the fraction of the year expressed in decimal form
0.05 x 100 = 5% <---convert the decimal to percent

5% of the year

Answer 2

Basically you divide 438 by 8760 to get the answer.