Whenever mine has gone much above 30% (70ish prob highest ever) it generally turns out to be an unattended app left open on the android device I have hanging off the back of the TV. I recall the NYT app, for example, pinging home every 30 seconds or so.
You can trace offending devices and traffic via pi-hole logs. The UI is a bit clunky but gets the job done.
You can trace offending devices and traffic via pi-hole logs. The UI is a bit clunky but gets the job done.