The ornamental design for a displayscreen or portion thereof with graphical user interface, as shown and described.
The patent file contains at least one drawing executed in color. Copies of this patent with color drawing(s) will be provided by the Office upon request and payment of the necessary fee.
The FIGURE is a front view of the claimed design for a display screen or portion thereof with graphical user interface.
The outer rectangle in the drawing shows a display screen. The broken lines showing the display screen or portion thereof with graphical user interface depict environmental structure and form no part of the claimed design.