12.35% is the change from 591 to 664
Calculation steps:
[( 664 - 591 ) ÷ 591] x 100 = 12.35%
Formula
Percentage change = [(664 - 591) / 591] x 100
Subtract the new number by the original number
664 - 591 = 73
73 ÷ 591 = 0.12351945854483926
0.12351945854483926 x 100 = 12.35%