57.48% is the change from 421 to 663
Calculation steps:
[( 663 - 421 ) ÷ 421] x 100 = 57.48%
Formula
Percentage change = [(663 - 421) / 421] x 100
Subtract the new number by the original number
663 - 421 = 242
242 ÷ 421 = 0.5748218527315915
0.5748218527315915 x 100 = 57.48%