-88.44% is the change from 173 to 20
Calculation steps:
[( 20 - 173 ) ÷ 173] x 100 = -88.44%
Formula
Percentage change = [(20 - 173) / 173] x 100
Subtract the new number by the original number
20 - 173 = -153
-153 ÷ 173 = -0.884393063583815
-0.884393063583815 x 100 = -88.44%