Solve the following word problems for the unknown. Round decimals to hundredths and percents to the nearest tenth when necessary. By what percent is a 100-watt lightbulb brighter than a

Solve the following word problems for the unknown. Round decimals to hundredths and percents to the nearest tenth when necessary.
By what percent is a 100-watt lightbulb brighter than a 60-watt bulb