28.98% is the change from 421 to 543
Calculation steps:
[( 543 - 421 ) ÷ 421] x 100 = 28.98%
Formula
Percentage change = [(543 - 421) / 421] x 100
Subtract the new number by the original number
543 - 421 = 122
122 ÷ 421 = 0.28978622327790976
0.28978622327790976 x 100 = 28.98%