A family of Microsoft spreadsheet software with tools for analyzing, charting, and communicating data.
The @ means "For this row within the table" So you want the entire column within the table:
=COUNTIFS(Table1[Contract Deliverable],"Yes")
And for the It is, if that is the entirety of the cell entry:
=COUNTIFS(Table1[Contract Deliverable],"It is")
Note that you don't need the = sign ever for the criteria argument. (You also don't need COUNTIFS if you have only one criteria, but it is OK to use it instead of COUNTIF.)