Hi Angeline,
You can use 2 table to show calculation on the basis of values display in above column. To achieve this you can follow below steps:
1. Create another table just below your previous one
2. Perform calculation when you fetch data from aggregate(If you are manipulating the data during run time then use refresh data) i.e. perform calculation just after you get data from aggregate.
3. Inside your new table use expression and assign that value.



Hope this will help you
Regards,
Vipasha Sharma