Cant figure that out.

Defense is shown when you look in the apparel section of your inventory. Then use this formula to convert the number to the actual percentage:

Damage reduction percentage = (displayed armor rating + hidden armor rating) x 0.12%
The hidden armor rating is an extra +25 per armor piece worn (helmet, boots, gloves, body).


To get your resistances, simply add the numbers shown under Active Effects in the Magic menu.
Some numbers are hardcoded and doesn't show the actual resistance if they're increased in some way (being a vampire and having the Necromage perk, mostly).