7.78% is the change from 630 to 679
Calculation steps:
[( 679 - 630 ) ÷ 630] x 100 = 7.78%
Formula
Percentage change = [(679 - 630) / 630] x 100
Subtract the new number by the original number
679 - 630 = 49
49 ÷ 630 = 0.07777777777777778
0.07777777777777778 x 100 = 7.78%