68.7% is the change from 230 to 388
Calculation steps:
[( 388 - 230 ) ÷ 230] x 100 = 68.7%
Formula
Percentage change = [(388 - 230) / 230] x 100
Subtract the new number by the original number
388 - 230 = 158
158 ÷ 230 = 0.6869565217391305
0.6869565217391305 x 100 = 68.7%