7.77% is the change from 669 to 721
Calculation steps:
[( 721 - 669 ) ÷ 669] x 100 = 7.77%
Formula
Percentage change = [(721 - 669) / 669] x 100
Subtract the new number by the original number
721 - 669 = 52
52 ÷ 669 = 0.07772795216741404
0.07772795216741404 x 100 = 7.77%