-8.98% is the change from 891 to 811
Calculation steps:
[( 811 - 891 ) ÷ 891] x 100 = -8.98%
Formula
Percentage change = [(811 - 891) / 891] x 100
Subtract the new number by the original number
811 - 891 = -80
-80 ÷ 891 = -0.08978675645342311
-0.08978675645342311 x 100 = -8.98%