0.97% is the change from 821 to 829
Calculation steps:
[( 829 - 821 ) ÷ 821] x 100 = 0.97%
Formula
Percentage change = [(829 - 821) / 821] x 100
Subtract the new number by the original number
829 - 821 = 8
8 ÷ 821 = 0.0097442143727162
0.0097442143727162 x 100 = 0.97%