-17.92% is the change from 173 to 142
Calculation steps:
[( 142 - 173 ) ÷ 173] x 100 = -17.92%
Formula
Percentage change = [(142 - 173) / 173] x 100
Subtract the new number by the original number
142 - 173 = -31
-31 ÷ 173 = -0.1791907514450867
-0.1791907514450867 x 100 = -17.92%