57.24% is the change from 421 to 662
Calculation steps:
[( 662 - 421 ) ÷ 421] x 100 = 57.24%
Formula
Percentage change = [(662 - 421) / 421] x 100
Subtract the new number by the original number
662 - 421 = 241
241 ÷ 421 = 0.5724465558194775
0.5724465558194775 x 100 = 57.24%