-81.36% is the change from 939 to 175
Calculation steps:
[( 175 - 939 ) ÷ 939] x 100 = -81.36%
Formula
Percentage change = [(175 - 939) / 939] x 100
Subtract the new number by the original number
175 - 939 = -764
-764 ÷ 939 = -0.8136315228966986
-0.8136315228966986 x 100 = -81.36%