45.13% is the change from 421 to 611
Calculation steps:
[( 611 - 421 ) ÷ 421] x 100 = 45.13%
Formula
Percentage change = [(611 - 421) / 421] x 100
Subtract the new number by the original number
611 - 421 = 190
190 ÷ 421 = 0.4513064133016627
0.4513064133016627 x 100 = 45.13%