Formula for Extra Damage due to elemental weakness?

[Mugaaz2]

I'm having trouble figuring this out. Has anyone derived it?

IE.
400 base dmg + 400dmg weapon = X dmg per hit

400 base dmg + 400 dmg weapon with Y% element = X (+/x Z) dmg per hit vs enemy weak to that element?

[Zorafim]

I would assume that, if you would normally do 100 damage against a monster, the added damage would be the % of the element of the weapon. If it's a light monster and your weapon has 50% dark, then you'd do 150 damage. Probably works in reverse too, making you do only 50 damage to darkness monsters.

Again I don't know, but that seems logical.

[AlphaMinotaux]

wouldnt it be easier, i use 20% lightning element weapon on an earth monster. i do 20% more dmg per hit to that mob.

[Itsuki]

it'd be nice if it worked this way. But nothing is perfect. It works close to this way, but it also appears that some monsters are just more elemental than others. So on certain monsters you deal more elemental damage and others you deal less.

Just an observation of mine, could be defence tricking my eyes though, but I'm pretty sure in Agata relics, there are certain monsters where I just do considerably more with a dark dagger, and certain monsters where I might as well just use a normal dagger because the difference in damage isn't noticable.

[Nayte]

using a weapon of the same element does make the weapon do less damage at all but this is coming from extra/story mode.

[Keldog]

It is the % plus the weapons base damage. Very little variation from this formula except on critical hits.