6.21% is the change from 773 to 821
Calculation steps:
[( 821 - 773 ) ÷ 773] x 100 = 6.21%
Formula
Percentage change = [(821 - 773) / 773] x 100
Subtract the new number by the original number
821 - 773 = 48
48 ÷ 773 = 0.062095730918499355
0.062095730918499355 x 100 = 6.21%