When you are creating your segment, there should be a gear in the right corner of the segment. Click on this and Exclude will be an option. Then set the variable with equals and then the page names will be excluded from the Workspace table.

Can you post an image of what the segment looks like from the Segment Creation page? It is difficult to tell from the information that you provided but it sounds like you need to use exclude instead of not does not equal.

I am not exactly sure what it is your trying to calculate. The values in account balance is a bucket for the volume of accounts that have that balance (so you have 88 accounts with a 20 balance). If you wanted to sum the 88 accounts with a balance of 20 for a value of 1760, then I would create a cal...