-74.1% is the change from 166 to 43
Calculation steps:
[( 43 - 166 ) ÷ 166] x 100 = -74.1%
Formula
Percentage change = [(43 - 166) / 166] x 100
Subtract the new number by the original number
43 - 166 = -123
-123 ÷ 166 = -0.7409638554216867
-0.7409638554216867 x 100 = -74.1%