57.72% is the change from 421 to 664
Calculation steps:
[( 664 - 421 ) ÷ 421] x 100 = 57.72%
Formula
Percentage change = [(664 - 421) / 421] x 100
Subtract the new number by the original number
664 - 421 = 243
243 ÷ 421 = 0.5771971496437055
0.5771971496437055 x 100 = 57.72%