35.11% is the change from 393 to 531
Calculation steps:
[( 531 - 393 ) ÷ 393] x 100 = 35.11%
Formula
Percentage change = [(531 - 393) / 393] x 100
Subtract the new number by the original number
531 - 393 = 138
138 ÷ 393 = 0.3511450381679389
0.3511450381679389 x 100 = 35.11%