How do you calculate capacity utilisation for a restaurant that has 65 seats but only 42 people dining each night?

The formula for calculating capacity Utilisation = output ÷ capacity x 100 

We are told capacity that the restaurants maximum capacity is 65 and output is 42 (people dining each night)

Therefore capacity utilisation = 42 ÷ 65 x100= 65% (to the nearest whole percentage)