I have some data for each month.say no of transactions for each month.When users selects any two months(from month,to_month) ..trend analysis to be shown with respect to from_month.i.e if from month is march2012 and to month is june 2012 then variation sud be as
april (data for april-data for march)/data for march *100
may (data for may-data for march)/data for march *100
june (data for june-data for march)/data for march *100
is there any way to do so in pivot table.