-81.6% is the change from 935 to 172
Calculation steps:
[( 172 - 935 ) ÷ 935] x 100 = -81.6%
Formula
Percentage change = [(172 - 935) / 935] x 100
Subtract the new number by the original number
172 - 935 = -763
-763 ÷ 935 = -0.8160427807486631
-0.8160427807486631 x 100 = -81.6%