The ornamental design for a displayscreen, or portion thereof, with graphical user interface, as shown and described.
FIG. 1 is a front view of a display screen, or portion thereof, with graphical user interface showing a first embodiment of the new design.
FIG. 2 is a detail view thereof, shown separately for ease of illustration; and,
FIG. 3 is a front view thereof, shown in an alternate environment.
The broken line showings of the display screen, or a portion thereof, and of selected elements of the graphical user interface are for environmental purposes only and form no part of the claimed design.