You never seem to try to reason with a pov that doesn’t Support yours it seems.
Just because you can’t understand that it is not simple addition makes you think it’s wrong, when in fact it never was stated that the percentage Simply Added on top of the base Value.
There are only two options. It’s either Added on top of the base Value or the base value is increased by a said percentage.
As the developers already gave us the answer, I fail to see your point. Yes it may be confusing and made unnessecarily complicated, nur it certainly is not wrong.
It’s not the fault of the developers that you don’t seem to understand it.
This way of using probabilities is extremely common.
For instance, if your yearly Revenue is 3% and you manage to increase it by a wooping 100%, it would be 103% following your Logic. But sadly that’s not how it is. It would be 6%, Finances and Economy are using this kind of wording on a daily Basis and it’s on the news all the Time, eg. Stock Market.
To me it seems you complain for the sake of complaining, because you apparently can’t understand that your Way of thinking is wrong. It is simple Probability calculus.
At this point I can’t take you seriously anymore. It’s just plainly childish behaviour that you are presenting here.
Just Take your Time and go through the given Formular and it will make Sense. No pont in argueing, if you fail to understand the opposite standpoint.