figuring calories

This may sound stupid but.... I made a pork loin in the crock pot and added Campells Apple bourbon slow cooker sauce. The nutrion info says it's 60 calories for 1/4 cup. I had 4 oz of the pork but I don't know how to add in the sauce calories. I can't imagine there was 1/4 cup of sauce in that 4 oz but how would you figure it?