I would expect that Chrome and iTunes are the root of your battery woes....
That's where if you study Task Manager/Resource Monitor or Energy reports you might catch something active that's abnormal.Just in the last 20 minutes since I have added my post, I went from 48% (as listed above) to 38% now. Nothing else is running in the background outside of IE which is how I am responding here. Nothing else running.
Run the powercfg /battery report and it will tell you exactly what your battery life is and will show the trends....
As a quicker fix rather then trying to narrow it down, a refresh or reset will most likely fix it....
That was the energy report, not the battery report, we typically post the reports to a public folder on our OneDrive....I did that and posted the results above although for some reason I cannot post the entire report. It saves a IE and cannot locate attachment when trying to do that here.