2.26% is the change from 664 to 679
Calculation steps:
[( 679 - 664 ) ÷ 664] x 100 = 2.26%
Formula
Percentage change = [(679 - 664) / 664] x 100
Subtract the new number by the original number
679 - 664 = 15
15 ÷ 664 = 0.022590361445783132
0.022590361445783132 x 100 = 2.26%