-22.73% is the change from 871 to 673
Calculation steps:
[( 673 - 871 ) ÷ 871] x 100 = -22.73%
Formula
Percentage change = [(673 - 871) / 871] x 100
Subtract the new number by the original number
673 - 871 = -198
-198 ÷ 871 = -0.22732491389207807
-0.22732491389207807 x 100 = -22.73%