Discrepancy between used/total disk usage from the storage module and df -h

[onefish2]

Describe the bug
On my system., the storage module reports 105GiB used out of a total size of 233 GiB (105/233 GiB). df -h shows 94G on / and 355M used on /boot. So I am trying to understand what the value of 105Gib is showing. There seems to be a discrepancy. Fastfetch shows 93.16GB / 232.71 GB so the 232.71 rounded up is 233. That makes sense but not the first value for used.

To Reproduce
See what values are Disk module shows and check with df -h or another tool

Expected behavior
I would expect the numbers to be close.

Desktop (please complete the following information):

• Distribution: Arch
• Window Manager/Desktop Environment: Hyprland

Where are you getting the disk used number from?

[Jas-SinghFSU]

Using GLibtop for this information: GTop.glibtop_get_fsusage(fsUsage, path);. Hyprpanel uses available block size while df shows free block size including reserved blocks.