-80.38% is the change from 846 to 166
Calculation steps:
[( 166 - 846 ) ÷ 846] x 100 = -80.38%
Formula
Percentage change = [(166 - 846) / 846] x 100
Subtract the new number by the original number
166 - 846 = -680
-680 ÷ 846 = -0.8037825059101655
-0.8037825059101655 x 100 = -80.38%