Note 8 Bettery Performance is getting Worst on Every update

[MiteshGajjar]

Dear Team, 

Please find attached my bettery usage screen. After each security update its getting worst. 

What can be done ? 

My phone is almost 2 years old. Should i need to replace bettery ? 

If yes what will be the cost ? 

[PanPerfect]

sudden drop shows something heavy usages on particular time. may be game? YouTube?

[skrm]

Samsung battery life cycle is less..so many have this complaints including me......just use power mode and kill all the apps.....shame on Samsung...no more updates to note 8 anymore just security updates only available....