9.36% is the change from 235 to 257
Calculation steps:
[( 257 - 235 ) ÷ 235] x 100 = 9.36%
Formula
Percentage change = [(257 - 235) / 235] x 100
Subtract the new number by the original number
257 - 235 = 22
22 ÷ 235 = 0.09361702127659574
0.09361702127659574 x 100 = 9.36%