38.13% is the change from 320 to 442
Calculation steps:
[( 442 - 320 ) ÷ 320] x 100 = 38.13%
Formula
Percentage change = [(442 - 320) / 320] x 100
Subtract the new number by the original number
442 - 320 = 122
122 ÷ 320 = 0.38125
0.38125 x 100 = 38.13%