-8.23% is the change from 911 to 836
Calculation steps:
[( 836 - 911 ) ÷ 911] x 100 = -8.23%
Formula
Percentage change = [(836 - 911) / 911] x 100
Subtract the new number by the original number
836 - 911 = -75
-75 ÷ 911 = -0.08232711306256861
-0.08232711306256861 x 100 = -8.23%