HTC India — battery life in less

Address:

Palakkad, Kerala, 678506

Good morning, now a days my htc m9+ prime cam battery life is getting low even the mobile screen is off, this was noticed last night, while im on bed mobile battery was 60+ % while i woke up in the morning it was came less 20%... Whats there with this? Is there any any option to make it stop, this was happening from last week onwards, before that i was charging my cell phone once or twice in a day...