34.77% is the change from 394 to 531
Calculation steps:
[( 531 - 394 ) ÷ 394] x 100 = 34.77%
Formula
Percentage change = [(531 - 394) / 394] x 100
Subtract the new number by the original number
531 - 394 = 137
137 ÷ 394 = 0.3477157360406091
0.3477157360406091 x 100 = 34.77%