25% is the change from 72 to 90
Calculation steps:
[( 90 - 72 ) ÷ 72] x 100 = 25%
Formula
Percentage change = [(90 - 72) / 72] x 100
Subtract the new number by the original number
90 - 72 = 18
18 ÷ 72 = 0.25
0.25 x 100 = 25%
Example