31.22% is the change from 394 to 517
Calculation steps:
[( 517 - 394 ) ÷ 394] x 100 = 31.22%
Formula
Percentage change = [(517 - 394) / 394] x 100
Subtract the new number by the original number
517 - 394 = 123
123 ÷ 394 = 0.31218274111675126
0.31218274111675126 x 100 = 31.22%