Crit chance problem

I've got some strange critical strike %. I just came back to wow after 2years, and merge my rogue back to this acc. Haven't played since Deathwing was up.
I decided that my critical strike chance is a bit to low. When i undress my character crit chance is 0.00% like it should be. Once i put 2 daggers 1 ring which gives 134 crit raiting and 178 agi it's still 0.00% but in brackets(when I aim mouse on crit chance) is written + 2.92%. I checked my rogue on armory with 2 daggers and ring crit chance is still 0.00%.
Mb someone can tell me is it ok, or it's not?