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; the icon is shown separately for clarity of illustration, on an enlarged scale; and,
FIG. 2 is another front view thereof.
The dash-dot broken lines in FIGS. 1 and 2 represent an unclaimed boundary line and form no part of the claimed design.
The outer dashed broken lines in FIG. 2 show a display screen or portion thereof and form no part of the claimed design.
The inner dashed broken line showing the remainder of the graphical user interface in FIG. 2 forms no part of the claimed design.