1.06% is the change from 661 to 668
Calculation steps:
[( 668 - 661 ) ÷ 661] x 100 = 1.06%
Formula
Percentage change = [(668 - 661) / 661] x 100
Subtract the new number by the original number
668 - 661 = 7
7 ÷ 661 = 0.01059001512859304
0.01059001512859304 x 100 = 1.06%