1.22% is the change from 819 to 829
Calculation steps:
[( 829 - 819 ) ÷ 819] x 100 = 1.22%
Formula
Percentage change = [(829 - 819) / 819] x 100
Subtract the new number by the original number
829 - 819 = 10
10 ÷ 819 = 0.01221001221001221
0.01221001221001221 x 100 = 1.22%