Guide Wynn Math - Skill Point Calculator

Hey.. sorry to say, but I just calculated it, this is a wrong formula. Literally. I thought it's mistake of something from my first seen of this fomula... It's not even cubic function.
Ex:
y=((2*x^3)-(1025*x^2)+245000x+26075)/250000
I did this, and assignmented 100 to x, and y≒65.1043... which isn't 65%.
And from my intelligence skill, (121 points, 72.5%),
I assignmented 121 to x too, and y≒72.8287... which isn't match to 72.5%.

Spoiler: Proof :p

I thought the formula is something like this:
y=percentage of the skills
x=points you have in that skills
y=(1-(0.99^x))*100
but I calculated it too, it's not the right formula too. :p
I heard the max skill percentage is 80% at 150 points, so I think these are written one by one by Salted.
Because I heard XP needed per levels are written one by one by Salted too.

Thanks for reading this :)
Special Thanks to this website.
Maybe some bad english, if so sorry for that :p

Edit: 4/16
Darn. This is completely wrong formula.

 

So if you add 213 (100,1%) on agility you are invincible? Cause I mean, it is possible if you add the 198 points you get from your levels, than you only have to add 15 with your gear. If you waer the blue mask, you can get 15 skillpoints so it is not that hard.

 

Skill points are capped at 150 (80%).

 

Ah, ok. That makes sense. Thank you.

 

This is what I got from a deeper analysis of the trend, if it's not cubic.

 

NECRO ALERT NECRO ALERT PREPARE FOR LOCKING

 

Yes, prepare for the incoming lock.