-8.38% is the change from 871 to 798
Calculation steps:
[( 798 - 871 ) ÷ 871] x 100 = -8.38%
Formula
Percentage change = [(798 - 871) / 871] x 100
Subtract the new number by the original number
798 - 871 = -73
-73 ÷ 871 = -0.08381171067738231
-0.08381171067738231 x 100 = -8.38%