37.5% is the change from 24 to 33
Calculation steps:
[( 33 - 24 ) ÷ 24] x 100 = 37.5%
Formula
Percentage change = [(33 - 24) / 24] x 100
Subtract the new number by the original number
33 - 24 = 9
9 ÷ 24 = 0.375
0.375 x 100 = 37.5%
Example