What do these numbers and symbols mean in my Documents folder in Finder? My Documents are uploaded automatically to iCloud, I recently put a bunch of photos into a subdirectory under ~/Documents/Old Photos and noticed Finder is syncing that directory to iCloud.  However the numbers are a little confusing.

See in the middle of the window there's an up-arrow with 159.28 GB next to it.  What exactly is this?  I thought it was the amount of data left to upload, however it is going up and down rather than just down.  Maybe MacOS is just doing a bad job calculating the remaining data...
Any insight would be helpful
I think I've figured it out.  So when I click the pie shown by the arrow below

this pops up another window showing the progress of my uploads

So I guess the figures do represent the data remaining for that directory, maybe MacOS just made up the numbers at the beginning
¯\_(ツ)_/¯