Backing up whatsapp to two different google drive accounts I have had my WhatsApp account backed up to my personal Google drive account, taking up a total space of 841 MB. I now have access to a Drive account with more space, and I'd like to switch backup to there. I tried changing the settings on the phone to backup to the new account, but i only get 549 MB there.
Why would the two backups be so different? I'd like to delete the original one to free up space, but not if it means losing data.
Thanks
Whatsapp store last 7 backups. 

You can see it by checking your file manager -> Whatsapp -> databases and there, you can see almost 7 files.

The size of files vary from each day.

Since you are changed your google account, the last backup file only be stored in G Drive and previous backups will not uploaded there.

So, after 7 days, you can see that the size in G Drive becoming 841 MB.