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 first embodiment of a display screen or portion thereof with graphical user interface depicting our new design;
FIG. 2 is a front view of a second embodiment of a display screen or portion thereof with graphical user interface depicting our new design;
FIG. 3 is a front view of a third embodiment of a display screen or portion thereof with graphical user interface depicting our new design;
FIG. 4 is a front view of a fourth embodiment of a display screen or portion thereof with graphical user interface depicting our new design; and,
FIG. 5 is a front view of fifth embodiment of a display screen or portion thereof with graphical user interface depicting our new design.
The dot-dash broken lines around the Figures showing a display screen or portion thereof form no part of the claimed design. The broken lines within the Figures illustrate portions of the display screen or portion thereof that form no part of the claimed design.