-23.92% is the change from 836 to 636
Calculation steps:
[( 636 - 836 ) ÷ 836] x 100 = -23.92%
Formula
Percentage change = [(636 - 836) / 836] x 100
Subtract the new number by the original number
636 - 836 = -200
-200 ÷ 836 = -0.23923444976076555
-0.23923444976076555 x 100 = -23.92%