31.78% is the change from 450 to 593
Calculation steps:
[( 593 - 450 ) ÷ 450] x 100 = 31.78%
Formula
Percentage change = [(593 - 450) / 450] x 100
Subtract the new number by the original number
593 - 450 = 143
143 ÷ 450 = 0.31777777777777777
0.31777777777777777 x 100 = 31.78%