Alright, here we go. I did 2% body weight a day for Sammy, it's an average starting amount and since he's not very overweight I don't see any need to go less than this, just feeding raw instead of commercial food, especially dry will drop any extra weight right off. Keep an eye on both of their weights, especially his since he's an adult, if he drops too much feed more, if he gets fatter feed less, though I doubt this will happen (keep in mind that numbers on a scale are not the best to go by, muscle mass may increase on raw making weight increase, so FEEL the cat, check for ribs, you should feel them without trouble but should not see them unless he stretches). If he seems very hungry on 2% you can bump him up to 3% and just watch the weight. The feeding amounts will be split into different sections of the diet. First how much total amount (weight) of everything he'll eat a day, then the total amount of everything he'll eat a week. After that I'll split the weight of food in a week into the different sections: meat, Bone, liver and "other" organ (not liver and not heart). After about a week of feeding you'll know what each amount looks like and can pretty much just go by eye of how much to feed. You don't need to be perfect, being a little off is not going to hurt your cat as long as he gets all of the categories regularly and is staying at a good weight. Some numbers are rounded.
Amount of food per day: 3.5 ounces
Amount of food per week: 24.5 ounces
Amount of MEAT per WEEK: 19.6 ounces
(80% of diet)
Amount of BONE per WEEK: 2.45 ounces
(10% of diet)
Amount of LIVER per WEEK: 1.2 ounces
(5% of diet)
Amount of "OTHER" ORGAN per WEEK:1.2 ounces
(5% of diet)
As you'll see I follow the 80:10:5:5 guideline for amounts of each category of food. You may adjust this to fit your cat. The things that are usually adjusted are bone and liver. Some cats will get loose stools (after being fully transitioned and settled on the food, normal loose stool during transition does not call for bone adjustment yet) which means they need more bone, some will get constipated which calls for more liver. Do not way overdue the liver however as TOO much can cause some medical problems. I also want to mention why it's on a weekly amount basis. You are not expected to feed all of the food categories (meat, bone, liver and other organ) every single day. Every day is not a balanced meal but the total food consumed in a week should be balanced and that is why the percentages for the entire week are shown, you will probably feed a week's worth of liver in one day.
For little Meeka I did 3% body weight per day. A kitten should be eating more of her weight than an adult cat, she is after all still growing and is probably more active than an adult cat. Truthfully you can feed as much as your kitten wants until growth starts slowing, if on 3% she is still often hungry feel free to up the amount for a while and once she reaches maturity, if she starts to pork out, slowly cut back. I rounded some numbers, I mainly rounded up since she is a kitten.
Amount of food per day: 2.64 ounces
Amount of food per week:18.5 ounces
Amount of MEAT per WEEK: 14.8 ounces
Amount of BONE per WEEK: 1.85 ounces
Amount of LIVER per WEEK: 1 ounce
Amount of "OTHER" ORGAN per WEEK: 1 ounce
If you want me to change any of these to grams or another measurement to make things easier I'd be happy to.
You generally end up feeding plain meat every day, a bony meal every third day or so, liver once a week and "other" organ once a week.
I hope this helps and if you have any questions about anything I've written, hoe I got my numbers or just raw in general, please ask