2.07% is the change from 821 to 838
Calculation steps:
[( 838 - 821 ) ÷ 821] x 100 = 2.07%
Formula
Percentage change = [(838 - 821) / 821] x 100
Subtract the new number by the original number
838 - 821 = 17
17 ÷ 821 = 0.020706455542021926
0.020706455542021926 x 100 = 2.07%