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 according to a first embodiment;
FIG. 2 is a front view of a display screen or portion thereof with graphical user interface showing our new design according to a second embodiment;
FIG. 3 is a front view of a display screen or portion thereof with graphical user interface showing our new design according to a third embodiment;
FIG. 4 is a front view of a display screen or portion thereof with graphical user interface showing our new design according to a fourth embodiment;
FIG. 5 is a front view of a display screen or portion thereof with graphical user interface showing our new design according to a fifth embodiment;
FIG. 6 is a front view of a display screen or portion thereof with graphical user interface showing our new design according to a sixth embodiment;
FIG. 7 is a front view of a display screen or portion thereof with graphical user interface showing our new design according to a seventh embodiment; and,
FIG. 8 is a front view of a display screen or portion thereof with graphical user interface showing our new design according to an eighth embodiment.
The outer perimeter shown in broken lines in the figures illustrates a display screen or portion thereof and forms no part of the claimed design. The remaining broken lines in the figures illustrate portions of the graphical user interface that form no part of the claimed design.