56.06% is the change from 421 to 657
Calculation steps:
[( 657 - 421 ) ÷ 421] x 100 = 56.06%
Formula
Percentage change = [(657 - 421) / 421] x 100
Subtract the new number by the original number
657 - 421 = 236
236 ÷ 421 = 0.5605700712589073
0.5605700712589073 x 100 = 56.06%