44.89% is the change from 421 to 610
Calculation steps:
[( 610 - 421 ) ÷ 421] x 100 = 44.89%
Formula
Percentage change = [(610 - 421) / 421] x 100
Subtract the new number by the original number
610 - 421 = 189
189 ÷ 421 = 0.4489311163895487
0.4489311163895487 x 100 = 44.89%