-6.54% is the change from 871 to 814
Calculation steps:
[( 814 - 871 ) ÷ 871] x 100 = -6.54%
Formula
Percentage change = [(814 - 871) / 871] x 100
Subtract the new number by the original number
814 - 871 = -57
-57 ÷ 871 = -0.06544202066590127
-0.06544202066590127 x 100 = -6.54%