Forms Data Controls :: Calculating Percentage Of Scheduled Hours?

I want to calcultae how many employees are scheduled less 24 hrs for each week,b/w 24 and 48 and greater than 48

In excel file i have weekly wise total hours scheduled for each employee and total no of days scheduled in week(example 6 days and 1 off)which i will upload it to database,based on this i want to display reports in bound controls Result should be like this

Scheduled Hrs 8/1/2010
8/8/2010 8/15/2010 8/22/2010
Less than 24 hrs 5% 5% 5% 5%
Between 24 and 48 hrs 5% 6* 3% 4%
greater tan 48 hrs 90% 89% 92% 91%

can u tell me Which control to use and words in bold are headers and dates should be dyanamic this month it is like shown above, next week it will change.so header should be dynamic.