10.21% is the change from 421 to 464
Calculation steps:
[( 464 - 421 ) ÷ 421] x 100 = 10.21%
Formula
Percentage change = [(464 - 421) / 421] x 100
Subtract the new number by the original number
464 - 421 = 43
43 ÷ 421 = 0.1021377672209026
0.1021377672209026 x 100 = 10.21%