51.83% is the change from 409 to 621
Calculation steps:
[( 621 - 409 ) ÷ 409] x 100 = 51.83%
Formula
Percentage change = [(621 - 409) / 409] x 100
Subtract the new number by the original number
621 - 409 = 212
212 ÷ 409 = 0.5183374083129584
0.5183374083129584 x 100 = 51.83%