Backups off, but eating space on My passport for Mac

I have a 2TB My Passport for Mac for my MacBook Pro (Retina, 15-inch, Mid 2014).

I have one backup at 221 GB, but the My Passport is showing 1.13TBs worth of backups; more than half of the space taken, and the backup size is growing even though I shut Time Machine off.

How and why is this happening?

Hi,

Could be that you have a different software backing up your files.

If you open the drive, what folder you have inside?