-43.55% is the change from 310 to 175
Calculation steps:
[( 175 - 310 ) ÷ 310] x 100 = -43.55%
Formula
Percentage change = [(175 - 310) / 310] x 100
Subtract the new number by the original number
175 - 310 = -135
-135 ÷ 310 = -0.43548387096774194
-0.43548387096774194 x 100 = -43.55%