-9.2% is the change from 891 to 809
Calculation steps:
[( 809 - 891 ) ÷ 891] x 100 = -9.2%
Formula
Percentage change = [(809 - 891) / 891] x 100
Subtract the new number by the original number
809 - 891 = -82
-82 ÷ 891 = -0.0920314253647587
-0.0920314253647587 x 100 = -9.2%