4.51% is the change from 821 to 858
Calculation steps:
[( 858 - 821 ) ÷ 821] x 100 = 4.51%
Formula
Percentage change = [(858 - 821) / 821] x 100
Subtract the new number by the original number
858 - 821 = 37
37 ÷ 821 = 0.04506699147381242
0.04506699147381242 x 100 = 4.51%