-5.4% is the change from 871 to 824
Calculation steps:
[( 824 - 871 ) ÷ 871] x 100 = -5.4%
Formula
Percentage change = [(824 - 871) / 871] x 100
Subtract the new number by the original number
824 - 871 = -47
-47 ÷ 871 = -0.0539609644087256
-0.0539609644087256 x 100 = -5.4%