37.5% is the change from 88 to 121
Calculation steps:
[( 121 - 88 ) ÷ 88] x 100 = 37.5%
Formula
Percentage change = [(121 - 88) / 88] x 100
Subtract the new number by the original number
121 - 88 = 33
33 ÷ 88 = 0.375
0.375 x 100 = 37.5%
Example