6.34% is the change from 820 to 872
Calculation steps:
[( 872 - 820 ) ÷ 820] x 100 = 6.34%
Formula
Percentage change = [(872 - 820) / 820] x 100
Subtract the new number by the original number
872 - 820 = 52
52 ÷ 820 = 0.06341463414634146
0.06341463414634146 x 100 = 6.34%