RDA is based on a 2000 calorie diet, and since the recipe in it’s current proportions has only 1156 calories, it might be easier to interpret if you calculated the total nutrient values by (total % of RDA)*(2000 calories)/(number of calories in recipe), to give sort of a “nutrients per calorie” measure.
Wikipedia says plant iron is harder to absorb than meat iron (“heme” iron), so your percentages for iron may be an underestimate.
My thought was that if I wanted to drink this stuff, I’d need to double the recipe to meet my daily calorie requirements. If I did that, then I would get enough of a lot of things that currently seem too low. So scaling the %RDA for the vitamins and minerals, according to how much you’re actually going to drink, would make it easier to use.
But there might also be differences between people. Someone who weighs 50 kg is not going to need as many nutrients as someone who weighs 100 kg. RDA is based on a normal 25-year-old male, so you might be able to scale according to weight based on that. However, what about people who weigh the same, but have very different metabolisms? Should someone who eats 3000 calories a day have more vitamin E than someone who eats 1800 calories a day?If the answer is yes, then my “nutrients per calorie” idea would standardize your table so you could just drink as much of this concoction as you want and you’d have the right nutrient balance. If the answer is no, then there’s no reason to use the nutrients per calorie, and if you did use it you might end up overdosing on vitamin A. I tried to find some information to answer that question, but couldn’t find anything.