-44.69% is the change from 311 to 172
Calculation steps:
[( 172 - 311 ) ÷ 311] x 100 = -44.69%
Formula
Percentage change = [(172 - 311) / 311] x 100
Subtract the new number by the original number
172 - 311 = -139
-139 ÷ 311 = -0.44694533762057875
-0.44694533762057875 x 100 = -44.69%