In crystal reports 2008 I have created a crosstab which contains 2 values in the summaries section. See below: 

                Total

Total      198,257,904.96            Premiums)                                                  

                57,315,130.31                  (Claims)

2009       106,215,490.36

                57,067,598.01

2010       92,042,414.60

                247,532.29

I now want to include a percentage calculated on these 2 values but I can’t work out how you do this?  In the above example I want to calculate what percentage 57,315,130 is of 198,257,904 but the crosstab expert will only let me calculate a percentage on each total value in the report?