We claim the ornamental design for a display screen or portion thereof with graphical user interface, as shown and described.
FIG. 1 is a front view of a first embodiment 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 of a display screen or portion thereof with graphical user interface showing our new design;
FIG. 3 is a front view of a third embodiment of a display screen or portion thereof with graphical user interface showing our new design;
FIG. 4 is an enlarged front view of the graphical user interface shown in FIG. 1;
FIG. 5 is an enlarged front view of the graphical user interface shown in FIG. 2; and,
FIG. 6 is an enlarged front view of the graphical user interface shown in FIG. 3.
The outermost perimeter broken lines in the drawings represent a display screen or portion thereof and form no part of the claimed design. The remaining evenly-dashed broken lines in the drawings illustrate portions of the graphical user interface that form no part of the claimed design. The dot-dash broken lines define boundaries of the claimed design and form no part thereof. The lighter-weighted solid lines illustrate a contrast in appearance.