-78.65% is the change from 871 to 186
Calculation steps:
[( 186 - 871 ) ÷ 871] x 100 = -78.65%
Formula
Percentage change = [(186 - 871) / 871] x 100
Subtract the new number by the original number
186 - 871 = -685
-685 ÷ 871 = -0.7864523536165328
-0.7864523536165328 x 100 = -78.65%