Display Screen or Portion Thereof with Graphical User Interface

FIG. 1 is a front view of a display screen or portion thereof with graphical user interface showing my new design according to a first embodiment; and

FIG. 2 is a front view of a display screen or portion thereof with graphical user interface showing my new design according to a second embodiment.

FIG. 3 is a front view of a display screen or portion thereof with graphical user interface showing my new design according to a third embodiment; and,

FIG. 4 is a front view of a display screen or portion thereof with graphical user interface showing my new design according to a fourth embodiment.

The outer perimeter broken lines in the drawings represent a display screen or portion thereof and form no part of the claimed design.

The remaining broken lines in the drawings illustrate portions of the graphical user interface which form no part of the claimed design.

The grayscale portions shown within the broken line vertical slide bar in the lower right side of FIGS. 1 and 3 represent a contrast in appearance and form part of the claimed design. The other grayscale tones in the drawings represent a contrast in appearance that forms part of the claimed design.