-90.68% is the change from 891 to 83
Calculation steps:
[( 83 - 891 ) ÷ 891] x 100 = -90.68%
Formula
Percentage change = [(83 - 891) / 891] x 100
Subtract the new number by the original number
83 - 891 = -808
-808 ÷ 891 = -0.9068462401795735
-0.9068462401795735 x 100 = -90.68%