-35.69% is the change from 636 to 409
Calculation steps:
[( 409 - 636 ) ÷ 636] x 100 = -35.69%
Formula
Percentage change = [(409 - 636) / 636] x 100
Subtract the new number by the original number
409 - 636 = -227
-227 ÷ 636 = -0.35691823899371067
-0.35691823899371067 x 100 = -35.69%