6.33% is the change from 821 to 873
Calculation steps:
[( 873 - 821 ) ÷ 821] x 100 = 6.33%
Formula
Percentage change = [(873 - 821) / 821] x 100
Subtract the new number by the original number
873 - 821 = 52
52 ÷ 821 = 0.06333739342265529
0.06333739342265529 x 100 = 6.33%