What percent of 24 is 72

72 = x% from 24

72 = * 24

72 =  * 6

72 =                     / * 25 (both sides)

1800 = 6x               / ÷ 6 (both sides)

x = 300

72 is 300% of 24.

You can also do it easily in head as 72 is just as much as 3 times 24, so it has to be 300%.

The total would be 40.53