11.74% is the change from 230 to 257
Calculation steps:
[( 257 - 230 ) ÷ 230] x 100 = 11.74%
Formula
Percentage change = [(257 - 230) / 230] x 100
Subtract the new number by the original number
257 - 230 = 27
27 ÷ 230 = 0.11739130434782609
0.11739130434782609 x 100 = 11.74%