0.49% is the change from 816 to 820
Calculation steps:
[( 820 - 816 ) ÷ 816] x 100 = 0.49%
Formula
Percentage change = [(820 - 816) / 816] x 100
Subtract the new number by the original number
820 - 816 = 4
4 ÷ 816 = 0.004901960784313725
0.004901960784313725 x 100 = 0.49%