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 drawings will be provided by the Office upon request and payment of the necessary fee.
The FIGURE is a front view of a display screen or portion thereof with graphical user interface showing our new design.
The outer perimeter illustrated by dashed broken lines in the drawings illustrates a display screen or portion thereof and forms no part of the claimed design.