38.7% is the change from 230 to 319
Calculation steps:
[( 319 - 230 ) ÷ 230] x 100 = 38.7%
Formula
Percentage change = [(319 - 230) / 230] x 100
Subtract the new number by the original number
319 - 230 = 89
89 ÷ 230 = 0.3869565217391304
0.3869565217391304 x 100 = 38.7%