Percentages of nutrients

A percentage is just that - a proportion of whatever the calorie amount is.

Mathematically speaking, I'm not sure people get what you're asking.

I, too, am a little befuddled, but for this reason:

* If you require 3000 calories because you're a large (not over-fat, just tall/broad/muscular) person, you may need more of certain nutrients than someone who requires a 2000 calorie diet.
* If you require 3000 because you're still-overfat (i.e., if you were at a healthy goal weight, 2000 would be closer), then you may not need extra of most nutrients.
* If you require 3000 because you're 2000-calorie-sized, but extremely active, some of your nutrient needs may be higher, and which ones might depend on the nature of the activity (for example, if lots of muscle challenge, resulting in muscle tissue breakdown and need to rebuild, then probably need more protein - though protein isn't usually looked at as percentages (except in MFP ), so maybe you mean micronutrients?).

You might get some help with this from the USDA dietary reference intake calculator:

https://fnic.nal.usda.gov/fnic/dri-calculator/

I don't think it's perfect, but it may be more tailored (especially with respect to micros) than what you'll get here from our typed-out verbiage. You should be able to compare that to the generic 2000-calorie amounts, and figure out a sensible percentage to use.

If protein is part of the issue, I think this is a good (and reasonably scientifically sound/neutral) source:

https://examine.com/nutrition/how-much-protein-do-you-need/

I personally think the USDA site lowballs protein, based on more recent research that's reflected in the Examine.com article.