6.22% is the change from 772 to 820
Calculation steps:
[( 820 - 772 ) ÷ 772] x 100 = 6.22%
Formula
Percentage change = [(820 - 772) / 772] x 100
Subtract the new number by the original number
820 - 772 = 48
48 ÷ 772 = 0.06217616580310881
0.06217616580310881 x 100 = 6.22%