Actually first one was trial, I didn't removed it. The one which is visible is the required I suppose.
For doing the same
Step 1: Go to calculated field.
Step 2: Name you field "Contribution %" and add formula = Ash
Step 3: Select any cell of this field rht click show values as %of Grand Total
You dont have to add a field, simply use the normal Ash-field. You can place multiple values based on the same field. If you don't like the name, you can edit these via "Value Field Setting".