-99.1% is the change from 891 to 8
Calculation steps:
[( 8 - 891 ) ÷ 891] x 100 = -99.1%
Formula
Percentage change = [(8 - 891) / 891] x 100
Subtract the new number by the original number
8 - 891 = -883
-883 ÷ 891 = -0.9910213243546577
-0.9910213243546577 x 100 = -99.1%