Stats not adding up

Disclaimer:
This is my first time posting and I am sorry if I am on the wrong thread. If I am, can a mod move it the right one?

I am trying to find out what will be my stats when I acquire an item that is supposed to be BiS for my spec. I tried to look for character builders that are specific for WotLK. Found something called "rawr" but could not find any download links since it was discontinued. So I decided to create a spreadsheet to tally my stats. The problem now is that the stats on the equips are not adding up on the character sheet.

Here is an example.
https://i.imgur.com/JObdtcp.png

Here is my character naked. I am particularly interested on the stat Agility. Notice that it has a default value of 78. I don't know where I got it. Probably base stats but I didn't find a proper wiki that explains it.


https://imgur.com/VcwOL8f.png

After equipping Wodin's Lucky Necklace, you can see here that suddenly I have 170 agility. 90 from Wodin's and 80 from my supposedly base agility. Suddenly I have 2 extra agility.


Can someone explain how did that happen? Is my base agility scaling by a percentage of the agility from the equipment? If so, what's the rate?

I would appreciate if you are specific with your answer. It would help me alot on my calculations for end game.

Here is a bonus image on my Wodin's:
https://imgur.com/FmyKVUm.png

Other info:
- I am on Icecrown server
- My class is a tauren druid with a feral dps spec

Also if someone can explain to me the calculations for the attack power as a feral druid I would be really grateful.

Do you, maybe, have this talent? (you should have it!) https://wotlk.evowow.com/?spell=33856

Unfortunately no.

https://imgur.com/uqICvXC

Good idea though. I am wondering why i don't have that. That's a good talent