43.13% is the change from 320 to 458
Calculation steps:
[( 458 - 320 ) ÷ 320] x 100 = 43.13%
Formula
Percentage change = [(458 - 320) / 320] x 100
Subtract the new number by the original number
458 - 320 = 138
138 ÷ 320 = 0.43125
0.43125 x 100 = 43.13%