-1.49% is the change from 871 to 858
Calculation steps:
[( 858 - 871 ) ÷ 871] x 100 = -1.49%
Formula
Percentage change = [(858 - 871) / 871] x 100
Subtract the new number by the original number
858 - 871 = -13
-13 ÷ 871 = -0.014925373134328358
-0.014925373134328358 x 100 = -1.49%