19.03% is the change from 331 to 394
Calculation steps:
[( 394 - 331 ) ÷ 331] x 100 = 19.03%
Formula
Percentage change = [(394 - 331) / 331] x 100
Subtract the new number by the original number
394 - 331 = 63
63 ÷ 331 = 0.1903323262839879
0.1903323262839879 x 100 = 19.03%