13.03% is the change from 591 to 668
Calculation steps:
[( 668 - 591 ) ÷ 591] x 100 = 13.03%
Formula
Percentage change = [(668 - 591) / 591] x 100
Subtract the new number by the original number
668 - 591 = 77
77 ÷ 591 = 0.13028764805414553
0.13028764805414553 x 100 = 13.03%