Arrange the digits 4, 6, 9, 2, 3 in the dividend and the digits 2, 5,2 in the divisor to give the greatest possible quotient.

To get the greatest possible quotient, you need the biggest possible
dividend and the smallest possible divisor.

       96,432 divided by 225  =   428.5666...  <== greatest possible

       23,469 divided by 522  =     44.9597...  <== smallest possible

The percent increase is 25%