19.34% is the change from 424 to 506
Calculation steps:
[( 506 - 424 ) ÷ 424] x 100 = 19.34%
Formula
Percentage change = [(506 - 424) / 424] x 100
Subtract the new number by the original number
506 - 424 = 82
82 ÷ 424 = 0.19339622641509435
0.19339622641509435 x 100 = 19.34%