7.79% is the change from 616 to 664
Calculation steps:
[( 664 - 616 ) ÷ 616] x 100 = 7.79%
Formula
Percentage change = [(664 - 616) / 616] x 100
Subtract the new number by the original number
664 - 616 = 48
48 ÷ 616 = 0.07792207792207792
0.07792207792207792 x 100 = 7.79%