-1.8% is the change from 887 to 871
Calculation steps:
[( 871 - 887 ) ÷ 887] x 100 = -1.8%
Formula
Percentage change = [(871 - 887) / 887] x 100
Subtract the new number by the original number
871 - 887 = -16
-16 ÷ 887 = -0.018038331454340473
-0.018038331454340473 x 100 = -1.8%