-23.65% is the change from 871 to 665
Calculation steps:
[( 665 - 871 ) ÷ 871] x 100 = -23.65%
Formula
Percentage change = [(665 - 871) / 871] x 100
Subtract the new number by the original number
665 - 871 = -206
-206 ÷ 871 = -0.2365097588978186
-0.2365097588978186 x 100 = -23.65%