-68.67% is the change from 166 to 52
Calculation steps:
[( 52 - 166 ) ÷ 166] x 100 = -68.67%
Formula
Percentage change = [(52 - 166) / 166] x 100
Subtract the new number by the original number
52 - 166 = -114
-114 ÷ 166 = -0.6867469879518072
-0.6867469879518072 x 100 = -68.67%