20.79% is the change from 428 to 517
Calculation steps:
[( 517 - 428 ) ÷ 428] x 100 = 20.79%
Formula
Percentage change = [(517 - 428) / 428] x 100
Subtract the new number by the original number
517 - 428 = 89
89 ÷ 428 = 0.20794392523364486
0.20794392523364486 x 100 = 20.79%