The ornamental design for a displayscreen or portion thereof with graphical user interface, as shown and described.
1. Display screen or portion thereof with graphical user interface
1.1 : Front
1.2 : Back
1.3 : Left
1.4 : Right
1.5 : Top
1.6 : Bottom
1.7 : Partial enlarged front view, provided for clarity of illustration
The outermost broken lines showing an electronic device are included to illustrate environmental structure; The dashed broken lines inside the solid line display screen show portions of the graphical user interface; the top and bottommost horizontal dashed broken lines in reproduction 1.7 indicate the limits of the enlarged partial view; all dashed broken lines form no part of the claimed design. The bold, dotted broken lines in reproductions 1.1 and 1.7 show portions of the graphical user interface which do form part of the claimed design as depicted.