17.87% is the change from 431 to 508
Calculation steps:
[( 508 - 431 ) ÷ 431] x 100 = 17.87%
Formula
Percentage change = [(508 - 431) / 431] x 100
Subtract the new number by the original number
508 - 431 = 77
77 ÷ 431 = 0.17865429234338748
0.17865429234338748 x 100 = 17.87%