-8.87% is the change from 891 to 812
Calculation steps:
[( 812 - 891 ) ÷ 891] x 100 = -8.87%
Formula
Percentage change = [(812 - 891) / 891] x 100
Subtract the new number by the original number
812 - 891 = -79
-79 ÷ 891 = -0.08866442199775533
-0.08866442199775533 x 100 = -8.87%