Display Screen or Portion Thereof with Graphical User Interface

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;

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. 3 is a front view of a third embodiment of the claimed design of a display screen or portion thereof with a graphical user interface;

FIG. 4 is a front view of a fourth embodiment of the claimed design of a display screen or portion thereof with a graphical user interface;

FIG. 5 is a front view of a fifth embodiment of the claimed design of a display screen or portion thereof with a graphical user interface;

FIG. 6 is a front view of a sixth embodiment of the claimed design of a display screen or portion thereof with a graphical user interface; and,

FIG. 7 is a front view of a sixth embodiment of the claimed design of a display screen or portion thereof with a graphical user interface.

FIGS. 1 - 7 are 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.