56.97% is the change from 409 to 642
Calculation steps:
[( 642 - 409 ) ÷ 409] x 100 = 56.97%
Formula
Percentage change = [(642 - 409) / 409] x 100
Subtract the new number by the original number
642 - 409 = 233
233 ÷ 409 = 0.5696821515892421
0.5696821515892421 x 100 = 56.97%