Which forms designer (Classic, Responsive, or New Responsive) are you using? 

New Responsive 

Below is how you can do this with two form variables. You could probably do this with just one variable, but I did not want to overcomplicate it.

Form Variable 1:

• Name = intChoicesSatCount
• Type = Integer
• Formula = 
  sum(ifElse(contains((Form]..Choice1],"Satisfactory"),1,0),ifElse(contains((Form]..Choice2],"Satisfactory"),1,0),ifElse(contains((Form]..Choice3],"Satisfactory"),1,0),ifElse(contains((Form]..Choice4],"Satisfactory"),1,0),...)
• Formula Note: Just keep adding the ifElse function syntax for each Choice field (15 in total).

Form Variable 2:

• Name = decSatPercent
• Type = Decimal
• Formula = round(((Form].]intChoicesSatCount]/15)*100,0)
• Formula Note: I had the round function round to 0 decimal places.

If you would like, you can add a Label control to the form and insert the decSatPercent form variable (along with a fixed % sign) to display the percentage.

That worked great! Thank you. One last thing, I understand how to display the number in a label, how do I put it into a field that will be saved to the Sharepoint list? 

Glad I could help. Below are steps to save the percentage in a list column.

1. Create a new column in the list of type Number (if you have not already). I named mine SatPercentage.
2. Add a Number control to the form with these settings:
   - Title = SatPercent (or whatever you would like to name it)
   - Connected to: SatPercentage (this is where you connect the form field value to the list column)
   - Numeric type = Decimal
   - Number of decimal places: Automatic
   - Visible = No (you can set this to Yes for testing)
   - Read-only = Yes
3. Create a form rule (see image below):
   - Name = Set SatPercent Field
   - IF decSatPercent Greater than or equals 0
     THEN SatPercent Value decSatPercent
     ELSE SatPercent Value 0

Thank you! 

Quick Question, Now they are asking for it to count N/A as well. How do I need to tweak the formula to include “Satisfactory and N/A”? 

What I would to avoid the first formula getting too complicated is create a second form variable of type integer to sum up the “N/A” choices. All you would need to do is copy the formula for the “Satisfactory” variable, then replace the “Satisfactory” parameter with the “N/A” choice. This formula would look like this:

sum(ifElse(contains(uForm].sChoice1],"N/A"),1,0),ifElse(contains(0Form].sChoice2],"N/A"),1,0),ifElse(contains(0Form].sChoice3],"N/A"),1,0),ifElse(contains(0Form].sChoice4],"N/A"),1,0),...)

Next create another integer form variable to sum up the other two choices variables. That formula would look like this:

oForm]. intChoicesSatCount] + tForm].sintChoicesNACount]