-87.77% is the change from 891 to 109
Calculation steps:
[( 109 - 891 ) ÷ 891] x 100 = -87.77%
Formula
Percentage change = [(109 - 891) / 891] x 100
Subtract the new number by the original number
109 - 891 = -782
-782 ÷ 891 = -0.877665544332211
-0.877665544332211 x 100 = -87.77%