How does vigor calculation work?

Privet amigos,
What I am seeing with my high school math, I am missing a draconic relic piece worth of vigor?
Can someone shed some light on this for me?
I reduced the total vigor by the ruby bonus and calculated the ruby bonus myself.
As rubies are supposed to give 9%, I reduced total vigor by 1177, so that comes to 13405. Adding 9% to that myself with the formula I am not sure of being correct as you see on the screenshot, I get to an outcome whihc is higher than I actually have.

https://i.imgur.com/SwqGtSJ.png