How to Calculate the previous Financial Qtr Measure Value

Hi Experts ,

I am getting the data from bex quey .

Prompts on Financial Qtr as From and To.

  ex: From : 20104(i.e 2010 yr 4th Qtr) To : 20113(2011 yr 3rd Qtr )

   am having the formula for %(Pecentage calculation) for Qtr wise :

                                 (measure value respective qtr -  measure value of Previous Qtr)/ Measure value of Previous Qtr.

ex:  if From :20104(2010 yr 4th Qtr) and To: 20113(2011yr 3rd Qtr)

Then I need calculate the % for all Quarters  20104, 20111, 20112, 20113 using the Above formula in cross table .

I asked BI team to provide the data  from : fromQtr -1  to ToQtr 

ex:  Fiancial Qtr        measure

         20103                     2

        20104                      1

        20111                      4

        20112                      2

        20113                      6

So here how we can get the previous qtr measue value to the formula  without using the previous or relative functions.

Any other logic to get the measure value of Previous Qtr in the formula .

Plzzz Help me .. very Urgent..

Thanks ..

Regards,

Nikil