20.12% is the change from 323 to 388
Calculation steps:
[( 388 - 323 ) ÷ 323] x 100 = 20.12%
Formula
Percentage change = [(388 - 323) / 323] x 100
Subtract the new number by the original number
388 - 323 = 65
65 ÷ 323 = 0.20123839009287925
0.20123839009287925 x 100 = 20.12%