-82.82% is the change from 966 to 166
Calculation steps:
[( 166 - 966 ) ÷ 966] x 100 = -82.82%
Formula
Percentage change = [(166 - 966) / 966] x 100
Subtract the new number by the original number
166 - 966 = -800
-800 ÷ 966 = -0.8281573498964804
-0.8281573498964804 x 100 = -82.82%