40.62% is the change from 421 to 592
Calculation steps:
[( 592 - 421 ) ÷ 421] x 100 = 40.62%
Formula
Percentage change = [(592 - 421) / 421] x 100
Subtract the new number by the original number
592 - 421 = 171
171 ÷ 421 = 0.40617577197149646
0.40617577197149646 x 100 = 40.62%