-98.68% is the change from 836 to 11
Calculation steps:
[( 11 - 836 ) ÷ 836] x 100 = -98.68%
Formula
Percentage change = [(11 - 836) / 836] x 100
Subtract the new number by the original number
11 - 836 = -825
-825 ÷ 836 = -0.9868421052631579
-0.9868421052631579 x 100 = -98.68%