Hi Becky, thank you for your participation!
Yes, 96.8% is certainly purebred and is about the highest we can call. We compare the DNA of your dogs to a reference panel, which is like the standards of each breeds DNA. Each dog is an individual and if a dog was to be 100%, that pretty much means that your dogs exact DNA was in our reference panel and compared it to itself if that makes sense.
Below is one of our blog post about the results if you are interested in learning more about what the results mean. Great question, thank you!