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; and,
FIG. 2 is a detailed view of FIG. 1, showing the claimed subject matter separately for clarity of illustration.
The broken lines showing the display screen are for the purpose of illustrating environment and form no part of the claimed design. The full line framework of the layout and the two rectangles each enclosing a small icon are claimed subject matter. The remaining dotted lines illustrating all text, icons, and greyscale elements of the graphical interface form no part of the claimed design.