-98.84% is the change from 173 to 2
Calculation steps:
[( 2 - 173 ) ÷ 173] x 100 = -98.84%
Formula
Percentage change = [(2 - 173) / 173] x 100
Subtract the new number by the original number
2 - 173 = -171
-171 ÷ 173 = -0.9884393063583815
-0.9884393063583815 x 100 = -98.84%