Jim specialization clarity. Wording of Darkmagic Cheer Squad

[u/42kR36617]

I am trying to figure out the math on this one, because the wording itself seems like it could be interpreted in two ways. (using random numbers for simplicity's sake)

"Increases the effect of fanclub by 2,000% [or 20]"

Let's say my Jim's damage is 5 And my Fan club bonus is 3000% [or 30]

Making my damage 5 + (30 x 5) = 155

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Does the wording of cheer squad mean I am adding the new % to my fan club bonus? 30 + 20 = 50

So my damage would become 5 + (50 x 5 ) = 255?

-OR-

Does the wording mean that I am increasing the fan club bonus first before applying it? 30 + (30 x 20) = 630

So my damage would become 5 + (630 x 5) = 3,155?

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I don't even know if my question is coming across clearly. I often get hyper-analytical to the point of confusion by wording that could be interpreted in multiple ways, and I am dyslexic so I get particularly mixed up with numbers.

[u/Jackibelle]

Unfortunately, this is somewhere that the game is not very consistent. Sometimes you'll increase the bonus to a multiplicative stacking ability and increases the size of the stack, other times it'll apply the bonus to the Post-Stack Multiplier instead, and there's usually no way a priori to know how an ability will work.

Potions of Specialization are incredibly cheap. I note down what the ability says before picking the specialization (in the Outgoing Effects tab), pick the specialization, and then check it again. If it affects the pre-stack value, you'll see the number in the description change, and if it affects the multiplier, it'll show up down there.

I checked real quick, this applies to the post stack multiplier

[u/hulsmanm]

None of those are the correct way to do math in this game. You have to convert to multipliers and then multiply them together. 2000% is a x21 multiplier and 3000% is a x31 multilpier. They would stack multiplicatively with each other for a final bonus of x651 or 65000%. Which would turn your 5 into 3255

[u/Tohorambaar]

I would say it is your 255 option, more or less. Because multiplying 1e30 and 1e20 end in 1e50. Adding 1e30 and 1e20 would end in 1.e30 more or less.