0.49% is the change from 819 to 823
Calculation steps:
[( 823 - 819 ) ÷ 819] x 100 = 0.49%
Formula
Percentage change = [(823 - 819) / 819] x 100
Subtract the new number by the original number
823 - 819 = 4
4 ÷ 819 = 0.004884004884004884
0.004884004884004884 x 100 = 0.49%