-81.15% is the change from 939 to 177
Calculation steps:
[( 177 - 939 ) ÷ 939] x 100 = -81.15%
Formula
Percentage change = [(177 - 939) / 939] x 100
Subtract the new number by the original number
177 - 939 = -762
-762 ÷ 939 = -0.8115015974440895
-0.8115015974440895 x 100 = -81.15%