22.8% is the change from 421 to 517
Calculation steps:
[( 517 - 421 ) ÷ 421] x 100 = 22.8%
Formula
Percentage change = [(517 - 421) / 421] x 100
Subtract the new number by the original number
517 - 421 = 96
96 ÷ 421 = 0.22802850356294538
0.22802850356294538 x 100 = 22.8%