-44.19% is the change from 310 to 173
Calculation steps:
[( 173 - 310 ) ÷ 310] x 100 = -44.19%
Formula
Percentage change = [(173 - 310) / 310] x 100
Subtract the new number by the original number
173 - 310 = -137
-137 ÷ 310 = -0.44193548387096776
-0.44193548387096776 x 100 = -44.19%