What is the difference between Available and (Fresh) numbers?

Initially, Available means the number of contacts "available" in the campaign, but this is before any scrubbing is done in the campaign.
Fresh is the number in parenthesis. Fresh means the number of contacts in the campaign that have not been dialed or scrubbed yet.
When (Fresh) says (0), it means that everyone in the campaign has been dialed or scrubbed at least one time.
- If you have Click to Call, the cell phone numbers were not dialed the first time around, but they were pushed over to Click to Call. This number is still added into Available
If your campaign says Fresh is (0) and you have not dialed everyone in the campaign, go to Contacts > Manage Contacts > select the Campaigns box > choose your campaign > click done > click search. This will show you the results of your campaign in regards to who was connected, busy, no answer, DNC - skipped, or cell - skipped if it applies. If you have a large number of cell - skipped, you will want to switch to click to call