128.44% is the change from 320 to 731
Calculation steps:
[( 731 - 320 ) ÷ 320] x 100 = 128.44%
Formula
Percentage change = [(731 - 320) / 320] x 100
Subtract the new number by the original number
731 - 320 = 411
411 ÷ 320 = 1.284375
1.284375 x 100 = 128.44%