I do it sort of the same way..I think you taught me Hound dog but I was so confused at first, then I understood….
I takeaway 100% – Moisture% say moisture on tin is 78% then I takeaway 100-78= 22 thats the dry matter =22% then look on can what’s the fat, say 5% I then get the calculater & devide, I put 5 that’s the fat on tin then devide by 22 then I press the % on the calculater & u’ll get 22.727272 so the fat is about 22%..even if u just put 5 devided by 22 I still get the 0.22.727272 there’s just a 0 in front does that make sense.. I cant find a tin food that’s low enough in fat only the vet prescription diets, so I boil chicken breast & I boil pumkin that way I know what he’s eating the only problem Im having my boy has lost weight & I dont know what to feed him that doesnt have much fat & doesnt have much carbs as he gets itchy, maybe I’ll add some rice, I added pasta but he started to itch….
