-79.68% is the change from 871 to 177
Calculation steps:
[( 177 - 871 ) ÷ 871] x 100 = -79.68%
Formula
Percentage change = [(177 - 871) / 871] x 100
Subtract the new number by the original number
177 - 871 = -694
-694 ÷ 871 = -0.7967853042479908
-0.7967853042479908 x 100 = -79.68%