24.21% is the change from 409 to 508
Calculation steps:
[( 508 - 409 ) ÷ 409] x 100 = 24.21%
Formula
Percentage change = [(508 - 409) / 409] x 100
Subtract the new number by the original number
508 - 409 = 99
99 ÷ 409 = 0.24205378973105135
0.24205378973105135 x 100 = 24.21%