41.57% is the change from 421 to 596
Calculation steps:
[( 596 - 421 ) ÷ 421] x 100 = 41.57%
Formula
Percentage change = [(596 - 421) / 421] x 100
Subtract the new number by the original number
596 - 421 = 175
175 ÷ 421 = 0.4156769596199525
0.4156769596199525 x 100 = 41.57%