IOS 10 on iPhone 6s - Battery drain issue

Hello Everyone!,

I have updated the Official IOS 10 OTA on my iPhone 6s, Here are the Initial impressions, I felt everything refreshing about IOS10, However one thing(The major) bit bothering me, Did anyone felt that Battery is draining Faster? In the morning Around 8:30 AM it was 89% after i did the update, Currently it's 56% (Straight 89% to 56%), I hardly used for mobile calls about 40mins, Whatsapp 20mins and other misc internet activites about 30mins or so, This was not the case with IOS9.3.5 and on screen time on an aggregate used to be 4hrs 30mins or slightly above, I seriously expected better battery life.

Thanks,

Sunil