56.23% is the change from 409 to 639
Calculation steps:
[( 639 - 409 ) ÷ 409] x 100 = 56.23%
Formula
Percentage change = [(639 - 409) / 409] x 100
Subtract the new number by the original number
639 - 409 = 230
230 ÷ 409 = 0.5623471882640587
0.5623471882640587 x 100 = 56.23%