-98.65% is the change from 891 to 12
Calculation steps:
[( 12 - 891 ) ÷ 891] x 100 = -98.65%
Formula
Percentage change = [(12 - 891) / 891] x 100
Subtract the new number by the original number
12 - 891 = -879
-879 ÷ 891 = -0.9865319865319865
-0.9865319865319865 x 100 = -98.65%