Hi,

First you will have to query the list and store the Yes No column in a collection variable.

Next use a Collection Operation and count the total number of items returned by the query.

Next you will need to loop through the collection and look for the word Yes.  Every time you find it you add 1 to a variable.  This way you will know how many said yes.

You then use a math operation to divide the number of yes's by the total.

Then use another math operation to multiple by 100 and you will have your percentage.

See attachment for what the workflow layout would look like.

I also attached a workflow export.  You will need to re-configure the query list action.

That worked out great! Apologize since I am still learning Nintex, how do I display the calculated percentage value from this workflow in a SharePoint page to be viewed?

Basically on a SharePoint page, we want to see the percentage complete within a column.