0.49% is the change from 820 to 824
Calculation steps:
[( 824 - 820 ) ÷ 820] x 100 = 0.49%
Formula
Percentage change = [(824 - 820) / 820] x 100
Subtract the new number by the original number
824 - 820 = 4
4 ÷ 820 = 0.004878048780487805
0.004878048780487805 x 100 = 0.49%