53.13% is the change from 431 to 660
Calculation steps:
[( 660 - 431 ) ÷ 431] x 100 = 53.13%
Formula
Percentage change = [(660 - 431) / 431] x 100
Subtract the new number by the original number
660 - 431 = 229
229 ÷ 431 = 0.531322505800464
0.531322505800464 x 100 = 53.13%