Is 10% to 15% battery drain normal with the Moto 360?

My routine is to put the 360 on the charger while I am getting ready for bed, then when it is charged to 100%(or close to it), I take it off the charger.

Every time I wake up in the morning, the watch has dropped between 10% to 15%. It's been like this forever and I can't understand what would make it do that.

I have even tried turning Bluetooth off on the phone before bed in hopes that it would help but it doesn't. I use the 'Weather Wear Watch Face' and I guess it could be that.

I'm going to change watch faces tonight to see if I get the same drain but I was curious what everyone else's experience with nightly drain is(for those that don't keep the device on the charger)