-2.99% is the change from 871 to 845
Calculation steps:
[( 845 - 871 ) ÷ 871] x 100 = -2.99%
Formula
Percentage change = [(845 - 871) / 871] x 100
Subtract the new number by the original number
845 - 871 = -26
-26 ÷ 871 = -0.029850746268656716
-0.029850746268656716 x 100 = -2.99%