3.9% is the change from 821 to 853
Calculation steps:
[( 853 - 821 ) ÷ 821] x 100 = 3.9%
Formula
Percentage change = [(853 - 821) / 821] x 100
Subtract the new number by the original number
853 - 821 = 32
32 ÷ 821 = 0.0389768574908648
0.0389768574908648 x 100 = 3.9%