30.51% is the change from 236 to 308
Calculation steps:
[( 308 - 236 ) ÷ 236] x 100 = 30.51%
Formula
Percentage change = [(308 - 236) / 236] x 100
Subtract the new number by the original number
308 - 236 = 72
72 ÷ 236 = 0.3050847457627119
0.3050847457627119 x 100 = 30.51%