3.9% is the change from 871 to 905
Calculation steps:
[( 905 - 871 ) ÷ 871] x 100 = 3.9%
Formula
Percentage change = [(905 - 871) / 871] x 100
Subtract the new number by the original number
905 - 871 = 34
34 ÷ 871 = 0.03903559127439724
0.03903559127439724 x 100 = 3.9%