3.81% is the change from 839 to 871
Calculation steps:
[( 871 - 839 ) ÷ 839] x 100 = 3.81%
Formula
Percentage change = [(871 - 839) / 839] x 100
Subtract the new number by the original number
871 - 839 = 32
32 ÷ 839 = 0.03814064362336114
0.03814064362336114 x 100 = 3.81%