42.99% is the change from 321 to 459
Calculation steps:
[( 459 - 321 ) ÷ 321] x 100 = 42.99%
Formula
Percentage change = [(459 - 321) / 321] x 100
Subtract the new number by the original number
459 - 321 = 138
138 ÷ 321 = 0.42990654205607476
0.42990654205607476 x 100 = 42.99%