I am on pp and i have recently utilized the fitday.com site to calculate my percentages. my percentages are usually like:

low 40's% for fat
mid 40's% for protein
and 5-7% for carbs.

is this o.k.? because when i look at other people's percentages in their journals, their percentages are pretty much the same for carbs, but their other percentages for fat and protein are much higher than mine. why is this?