-88.3% is the change from 846 to 99
Calculation steps:
[( 99 - 846 ) ÷ 846] x 100 = -88.3%
Formula
Percentage change = [(99 - 846) / 846] x 100
Subtract the new number by the original number
99 - 846 = -747
-747 ÷ 846 = -0.8829787234042553
-0.8829787234042553 x 100 = -88.3%