Guild Wars 2

Hello together!

Simply put, I’ve built an Excel-Spreadsheet that uses different Character-Attributes to calculate the most powerful ratio between Power, Precision, Ferocity, etc., a few months ago. Since A-Net has now increased the Base-Stats from 916 to 926, I had to update the calculations and did some brief research on Precision and Critical Chance.
I don’t want to go into details, but I noticed that the calculation on Gw2-Wiki seems to be wrong.

The given formula for Crit.Chance is: Critical Chance = (Precision – 832) / 21.16

Here a few calculations using that formula:
927 Precision: Critical Chance = (927-832)/21.16 = 4.49 -> 4%
928 Precision: Critical Chance = (928-832)/21.16 = 4.54 -> 5%

948 Precision: Critical Chance = (948-832)/21.16 = 5.48 -> 5%
949 Precision: Critical Chance = (949-832)/21.16 = 5.53 -> 6%

1858 Precision: Critical Chance = (1858-832)/21.16 = 48.49 -> 48%
1859 Precision: Critical Chance = (1859-832)/21.16 = 48.54 -> 49%

However, these values don’t fit the displayed stats on the Hero-Panel:
http://imgur.com/a/KXwCK
As you can see, the jumps from 4% to 5%, 5% to 6% and 48% to 49% are not at the calculated Precision-values.

Now, I’m not extremely blessed with mathematical skills, but I think we cannot calculate a precise formula with the given data, because we don’t know if a value is e.g. 44.68 or 45.42, since both are displayed as 45%.

Also, I want to use the chance to ask if Gw2 uses a rounded or the exact value to make out whether to critically hit or not.
In other words: If we calculated a Crit.Chance-value of 67.2574% which, obviously, is displayed as 67%, will I critically hit 67%, 67.25%, 67.2574% or whatever % of the hits?

Doing research on my own would cost way too much time and nerves.

Of course, the differences won’t change the results entirely, but I’d love to have exact and confirmed formulas in my spreadsheet. That’s why I want to ask A-Net to give us/me the exact formula for the Critical Chance-Calculation.

Thanks in advance and happy calculating.

PS:
I (now) put this post into the Dungeon-Section, because I’m sure the only players who have put some serious thought into the topic are to be found in the Dungeon-Community – I hope you guys can deliver the best answers if A-Net can’t/doesn’t answer me here.

DEKeys did some tests and base critical chance is probably 4.5%. Also slightly different chance gave slightly different result so critical chance probably doesn’t round.

Based on my own tests, 100% on hero screen means 100% chance so critical chance is floored on hero screen.

Source: http://dtguilds.com/forum/m/6563292/viewthread/12997907-advanced-mechanics