-40.96% is the change from 166 to 98
Calculation steps:
[( 98 - 166 ) ÷ 166] x 100 = -40.96%
Formula
Percentage change = [(98 - 166) / 166] x 100
Subtract the new number by the original number
98 - 166 = -68
-68 ÷ 166 = -0.40963855421686746
-0.40963855421686746 x 100 = -40.96%