I agree with the percentages being highly individualized. You will have to look at it for awhile, see if it's making a difference (are you losing weight?) and change from there if you need to.
Everyone is different. I personally can not lose weight with my carbs above 40% of my diet, I try to keep my carbs below 35%. My ideal mix is almost equivalent ratios of protein, fat, and carbs. For many people they do need more protein in their diet to help them lose weight. I was vegetarian for 6 years, and it is very difficult to get enough protein to manage your weight on this type of diet. I am not saying it can't be done, and certainly not criticizing your choice of it; I just know from experience that I made up for my lack of meat in my diet by eating pastas, cheeses, and other things that for me tend to make me gain weight.
Another tip to figuring out your ratios that are right for your body type, is to take note of how you feel (mood, energy level, etc..) on different days. I started doing this and it became all too apparent to me that I feel like I will "crash and burn" on my high carb days. Your body will tell you it's right for you.
Good luck figuring out your good ratios.