-81.5% is the change from 935 to 173
Calculation steps:
[( 173 - 935 ) ÷ 935] x 100 = -81.5%
Formula
Percentage change = [(173 - 935) / 935] x 100
Subtract the new number by the original number
173 - 935 = -762
-762 ÷ 935 = -0.8149732620320855
-0.8149732620320855 x 100 = -81.5%