-4.94% is the change from 871 to 828
Calculation steps:
[( 828 - 871 ) ÷ 871] x 100 = -4.94%
Formula
Percentage change = [(828 - 871) / 871] x 100
Subtract the new number by the original number
828 - 871 = -43
-43 ÷ 871 = -0.04936854190585534
-0.04936854190585534 x 100 = -4.94%