I have 'Use%' = 100% in df -h but 'Used' is different that the Size in ext3 filesystem

Issue

• When I run df -h command, the output show that I have 100% used. But the Size and Aval view have different values :

# df -h /mount_point
Filesystem            Size  Used Avail Use% Mounted on
/dev/device           133G  126G  164M 100% /mount_point