-5.05% is the change from 871 to 827
Calculation steps:
[( 827 - 871 ) ÷ 871] x 100 = -5.05%
Formula
Percentage change = [(827 - 871) / 871] x 100
Subtract the new number by the original number
827 - 871 = -44
-44 ÷ 871 = -0.0505166475315729
-0.0505166475315729 x 100 = -5.05%