Protection enchantment mechanics revision

The Protection enchantment gives a total of 64% of added defense against EVERYTHING, making the other 3 protection enchantments totally worthless.

This must be changed

I think that that Protection should give 4% damage protection against general sources, but give only 1% of defense reduction. This means that it would give 32% of protection against general damage, but only 16% reduction against projectiles, fire and explosions