19.39% is the change from 330 to 394
Calculation steps:
[( 394 - 330 ) ÷ 330] x 100 = 19.39%
Formula
Percentage change = [(394 - 330) / 330] x 100
Subtract the new number by the original number
394 - 330 = 64
64 ÷ 330 = 0.19393939393939394
0.19393939393939394 x 100 = 19.39%