Guild Wars 2

I am wondering how these work exactly. I am wondering how the traits that provide +5% or +10% of (power, precision, etc) benefits (vitality, toughness, etc).

Are these percentages based on trait points not or on equipment as well?

Are a % of the total ammount, so yes count equipment too, and everything you are wearing or even with buff such food.

Its the % of that number which appear in attributes box when you click (H)