71.72% is the change from 389 to 668
Calculation steps:
[( 668 - 389 ) ÷ 389] x 100 = 71.72%
Formula
Percentage change = [(668 - 389) / 389] x 100
Subtract the new number by the original number
668 - 389 = 279
279 ÷ 389 = 0.7172236503856041
0.7172236503856041 x 100 = 71.72%