-90.19% is the change from 846 to 83
Calculation steps:
[( 83 - 846 ) ÷ 846] x 100 = -90.19%
Formula
Percentage change = [(83 - 846) / 846] x 100
Subtract the new number by the original number
83 - 846 = -763
-763 ÷ 846 = -0.9018912529550828
-0.9018912529550828 x 100 = -90.19%