29.45% is the change from 421 to 545
Calculation steps:
[( 545 - 421 ) ÷ 421] x 100 = 29.45%
Formula
Percentage change = [(545 - 421) / 421] x 100
Subtract the new number by the original number
545 - 421 = 124
124 ÷ 421 = 0.29453681710213775
0.29453681710213775 x 100 = 29.45%