31.06% is the change from 235 to 308
Calculation steps:
[( 308 - 235 ) ÷ 235] x 100 = 31.06%
Formula
Percentage change = [(308 - 235) / 235] x 100
Subtract the new number by the original number
308 - 235 = 73
73 ÷ 235 = 0.31063829787234043
0.31063829787234043 x 100 = 31.06%