-8.03% is the change from 909 to 836
Calculation steps:
[( 836 - 909 ) ÷ 909] x 100 = -8.03%
Formula
Percentage change = [(836 - 909) / 909] x 100
Subtract the new number by the original number
836 - 909 = -73
-73 ÷ 909 = -0.08030803080308031
-0.08030803080308031 x 100 = -8.03%