Update to 15.6 is draining my iPhone battery

Is anybody else having a problem with the most recent update (which included security updates) draining their iPhone?

This has happened to me since I updated 2 days ago. I hope Apple will be bringing out a fix pretty quick. Does anybody know how to report this to them, without having to spend ages on the phone, I just want to make them aware of this issue.

Thanks 👍🏻