VMS Help MONITOR, MONITOR, MODES, Classname Qualifiers, /PERCENT  *Conan The Librarian (sorry for the slow response - running on an old VAX)

       /PERCENT
       /NOPERCENT (default)

    Controls whether statistics are expressed as percent values
    in display and summary outputs. The [NO]PERCENT qualifier is
    applicable only to the DISK, MODES, SCS, and STATES classes.