18.22% is the change from 428 to 506
Calculation steps:
[( 506 - 428 ) ÷ 428] x 100 = 18.22%
Formula
Percentage change = [(506 - 428) / 428] x 100
Subtract the new number by the original number
506 - 428 = 78
78 ÷ 428 = 0.1822429906542056
0.1822429906542056 x 100 = 18.22%