-56.63% is the change from 166 to 72
Calculation steps:
[( 72 - 166 ) ÷ 166] x 100 = -56.63%
Formula
Percentage change = [(72 - 166) / 166] x 100
Subtract the new number by the original number
72 - 166 = -94
-94 ÷ 166 = -0.5662650602409639
-0.5662650602409639 x 100 = -56.63%