At the time of that screenshot, top two battery usage stats were Android OS at 47% and Display at 23% (1h10m screen on time).
Significant kernel wakelocks from BBS: svnet (2h3m), wlan_rx_wake (1h56m), wlan_rx_wake (1h26m), sec-batter-monitor (1h24m)
I've attached a zip containing dmesg.txt, wakelock.txt, and a 10 minute shark capture during which time the phone dropped 2%, so I'm hoping whatever the culprit is was caught in that time.
Concerning relevant installed apps: I do have both Words and Hanging with Friends installed. However, the drastic difference in battery drain between wifi on and wifi off makes me believe that there is something else at play here. If I'm wrong about this, then I apologize for wasting your time.
Any help to identify the cause of this would be greatly appreciated. Thanks in advance!