im quite a big fella, 6'7" and 22 stone.

i go to the gym to try and lose weight and gain muscle. ive already lost a stone and got quite a lot stronger.
i have been taking maximuscle promax after the gym.
but i was wondering if i lowered the amount of protein in my diet would i burn more fat or not. probably a stupid question but i heven't got a clue with diets and stuff.
thanks in advance