40.43% is the change from 423 to 594
Calculation steps:
[( 594 - 423 ) ÷ 423] x 100 = 40.43%
Formula
Percentage change = [(594 - 423) / 423] x 100
Subtract the new number by the original number
594 - 423 = 171
171 ÷ 423 = 0.40425531914893614
0.40425531914893614 x 100 = 40.43%