3.17% is the change from 820 to 846
Calculation steps:
[( 846 - 820 ) ÷ 820] x 100 = 3.17%
Formula
Percentage change = [(846 - 820) / 820] x 100
Subtract the new number by the original number
846 - 820 = 26
26 ÷ 820 = 0.03170731707317073
0.03170731707317073 x 100 = 3.17%