40.86% is the change from 421 to 593
Calculation steps:
[( 593 - 421 ) ÷ 421] x 100 = 40.86%
Formula
Percentage change = [(593 - 421) / 421] x 100
Subtract the new number by the original number
593 - 421 = 172
172 ÷ 421 = 0.4085510688836104
0.4085510688836104 x 100 = 40.86%