Dear Samsung Member,
Greetings from Samsung Customer Support!
Please visit this mentioned link to resolve your device battery drain issue: https://www.samsung.com/in/support/mobile-devices/samsung-mobile-battery-drain-issue/
For further assistance, register your concern in Samsung Members Application (Open Samsung Members Application > Get help > Send Feedback > Error report/Ask questions).
Thank you for writing to Samsung.
Samsung Customer Support
Since 2 days ago I have the same issue on my Note 10+ ; Call Log/backup Restore is draining 45% of battery; I had no problems before.