Display Screen or Portion Thereof with Graphical User Interface

The file of this patent contains at least one drawing/photograph executed in color. Copies of this patent with color drawing(s)/photograph(s) will be provided by the Office upon request and payment of the necessary fee.

FIG. 1 is a front view of a first embodiment of the claimed design of a display screen or portion thereof with a graphical user interface; and,

FIG. 2 is a front view of a second embodiment of the claimed design of a display screen or portion thereof with a graphical user interface.

FIG. 1 is being submitted in color. FIG. 2 is being submitted in traditional black and white line drawings.

The outermost broken lines in the Figures illustrate a display screen or portion thereof and form no part of the claimed design. The other broken lines in the Figures illustrate portions of the graphical user interface that form no part of the claimed design.