29.83% is the change from 409 to 531
Calculation steps:
[( 531 - 409 ) ÷ 409] x 100 = 29.83%
Formula
Percentage change = [(531 - 409) / 409] x 100
Subtract the new number by the original number
531 - 409 = 122
122 ÷ 409 = 0.2982885085574572
0.2982885085574572 x 100 = 29.83%