-35.59% is the change from 635 to 409
Calculation steps:
[( 409 - 635 ) ÷ 635] x 100 = -35.59%
Formula
Percentage change = [(409 - 635) / 635] x 100
Subtract the new number by the original number
409 - 635 = -226
-226 ÷ 635 = -0.35590551181102364
-0.35590551181102364 x 100 = -35.59%