Lunch was at a brewery where there were no healthy options. I brought some soup in a small container and used that to dip the pieces of my salad I was willing to eat. I also ate an apple and orange I had brought. That was plenty.
Dinner was a really big and good salad at a restaurant that had a few vegan options. The salad probably had more salt and oil than optimal but it was pretty good. I probably could have eaten half of it and been satisfied. Dessert was a delicious vegan four-berry crisp, which we shared 3 ways. That was good. It didn't taste too sweet either and was mostly berries (probably a lot of sugar though).
I bet more than 10% of my calories were unhealthy today. How do you know? It seems like work to keep track. I suppose you could plan to stay on-plan except for one meal out per week. That would be relatively easy to keep track of. In some ways, though, I think it would be easier to be an extremist (100% on plan). My salad was good, but not as good (to me) as the ones I make at home. In this case I was being treated by my hosts, in exchange for giving a talk this afternoon, so it was convenient that I obliged them and ate the food. I guess the 10% rule was good for tonight's situation. I'm not in this situation often so it could be a 1% rule if I wanted.