69.97% is the change from 393 to 668
Calculation steps:
[( 668 - 393 ) ÷ 393] x 100 = 69.97%
Formula
Percentage change = [(668 - 393) / 393] x 100
Subtract the new number by the original number
668 - 393 = 275
275 ÷ 393 = 0.6997455470737913
0.6997455470737913 x 100 = 69.97%