Change in battery run-down

[Seeker336]

Looking for any suggestions to solve a recent issue. My Watch Ultra has been keeping reliable battery charge since I got it on Day 1. My routine has been to put it on the charger every evening while watching TV, Up until this past Sunday, it would show 60-65% charge remaining after 24 hours use. Starting Monday evening, it now shows down to 15-20% charge remaining when I put it on the charger in the evening.

No new updates or watch faces added. No changes to configuration. No changes to usage pattern. No updates to phone (Z Flip6). Change in battery consumptions just seems to have come from nowhere.

Any suggestions on what to check to restore previous battery profile?