-0.92% is the change from 871 to 863
Calculation steps:
[( 863 - 871 ) ÷ 871] x 100 = -0.92%
Formula
Percentage change = [(863 - 871) / 871] x 100
Subtract the new number by the original number
863 - 871 = -8
-8 ÷ 871 = -0.009184845005740528
-0.009184845005740528 x 100 = -0.92%