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 our new design;
FIG. 2 is a front view of a second embodiment thereof;
FIG. 3 is a front view of a third embodiment thereof; and,
FIG. 4 is a front view of a fourth embodiment thereof.
In the figures, the grayscale shading represents a contrast in appearance and is not limited to a specific color.
The outermost broken lines in the figures show a display screen or portion thereof, and form no part of the claimed design. The other broken lines in the figures show portions of the graphical user interface that form no part of the claimed design.