Damage calculation?

[Erian]

I'm a little confused right now. So far I thought that percentage based bonusses to damage are calculated multiplicative, i.e.: A beast below 50% HP (+25% dmg) using a beast ability vs. a critter (+50% dmg) with a base damage of 100 would deal 100*1,25*1,5 = 187,5 dmg. Everything I saw so far seemed to indicate to this working this way.

Now I wanted to get a single hit as high as possible - mostly just for fun and to see what is possible. Also if they are adding very strong boss pets this might actually be helpful. Anyways, what I came up so far was this:
Prepare the Fluxfire Feline by using Supercharge (+150% dmg) and Wind Up (+10% dmg). Use Call Lightning to increase mechanical dmg bei 25%. Debuff a beast (+50% dmg) enemy with Howl for +100% dmg taken. Overall this should be a 250%*110%*125%*150%*200% = 1031,25% increase in damage. The base damage of Wind up is ~700, so the resulting hit should be ~7200 (and a crit should be >10k and that would be kinda awesome ). What I am seeing though are hits around 6000 +/- 200. 20-25% are just missing.

Did I understand something wrong? Make an error in the calculation?

... and do you know any other combination that would yield a higher hit?

[Poofah]

All those modifiers are multiplicative as you say, at least to my knowledge. And your math looks fine. If you're off by 20-25%, then I would suspect that maybe Lightning Storm is not adding its 25% bonus as it states.

[Erian]

Ok, I just did a little testing based on your assumption - and it seems to be the right direction.
First I thought that Supercharge just overrides the +25% dmg from Lightning Storm. I tested this Wind Up of the Fluxfire Feline, Screeching Gears and Metal Fist from the Personal World Destroyer.

However, with the Metal Fist something strange happened: This thing is supposed to deal 329 * 250% = 822,5 (or 1028 if Lightning Storm would work) damage. I got the ~820 without Lightning Storm. However, with an active Lightning Storm I got ~900 on average, which is ~10% more than expected if they wouldn't stack and ~14% less than expected if they would stack. I tested this over 12 attacks with a max of 948 and a min of 863.

I double checked this with Screeching Gears (before that I always only tested 3-4 attacks, so that might have been a little off) and saw the same thing there: 246 base damage --> 615 without Lightning Storm, expected ~770 with Lightning Storm (if they would stack) and got 681 on average (10 attacks, max 709, min 612). Again 10% more than expected without stacking and ~13% less than with stacking.

Now I'm too tired to do the same testing with Wind Up of the Fluxfire Feline.

[Mathew013]

Don't forget Rabid Strike. There's another +25% damage.

[Jone]

... and do you know any other combination that would yield a higher hit?

My largest crit is 21099, Predatory Strike versus Marley (the fish pet from the Water Spirit). If the initial part of PS pushes the target below 25% health, the second half kicks in and hits for the target's health times crit, strong, and the PS multiplier.

[Erian]

Don't forget Rabid Strike. There's another +25% damage.

Nice idea, however: There is a timing problem (even with a very cooperating enemy ). The final part of my attack goes like this: Howl -> 2 Rounds +100% dmg -> Swap pet to Fluxfire Feline -> Howl @ 1 turn -> Wind Up = over 9000 crit!
Now if any Beast would have Rabid Strike this would work - according to wowhead no beast has. :-/

I checked the Reckless Strike as well but still no beast with this one.

What I would need is a (de)buff that increases damage dealt for the team or damage taken for 4+ rounds so it will sustain through 2 pet swaps.

My largest crit is 21099, Predatory Strike versus Marley (the fish pet from the Water Spirit). If the initial part of PS pushes the target below 25% health, the second half kicks in and hits for the target's health times crit, strong, and the PS multiplier.

Hey, thats cheating! (given the mechanic of Predatory Strike, that "simulates" an instant kill)
Very nice though. ^^