King Health Regen upgrade sentence could do with being more explanatory

[MakashiGames]

I have had an ongoing confusion with the king regen upgrade wording as I believed it was increasing the max health and so have been spamming it early, but it would appear it only actually increases the amount of HP the king can regen at any given time. I think this means it makes the most sense to spam the button when you king is as close to 1% HP as possible right?

[MakashiGames]

I've discussed this further with my mate who is much more experienced in this game than me and I think I understand the mechanic now.

So at any given point, the king can regenerate health if they are damaged. The amount they can regen, is a forumlae that is always being recalculated, which is stated in the tool tip etc (King's health regen = 0.005% missing health + 0.005% max health i.e. If kings max HP is 6000 and they have taken 1000 damage, then it is: 1000*0.005 + 6000*0.005 = 35)

And every time we click that upgrade button, we are increasing each of those percentages by 0.005%. So at the end, when we have clicked all 10, the regen rate is now
(King's health regen = 0.05% missing health + 0.05% max health i.e. If kings max HP is 6000 and they have taken 1000 damage, then it is: 1000*0.05 + 6000*0.05 = 350)

I absolutely did not understand that from the content of the game and I think more thought should go into how this is explained.