128.13% is the change from 320 to 730
Calculation steps:
[( 730 - 320 ) ÷ 320] x 100 = 128.13%
Formula
Percentage change = [(730 - 320) / 320] x 100
Subtract the new number by the original number
730 - 320 = 410
410 ÷ 320 = 1.28125
1.28125 x 100 = 128.13%