Display screen or portion thereof with a graphical user interface

[0001]FIG. 1 is a front view of a first embodiment of a display screen or portion thereof with a graphical user interface.

[0002]FIG. 2 is a front view of a second embodiment of a display screen or portion thereof with a graphical user interface.

[0003]FIG. 3 is a front view of a third embodiment of a display screen or portion thereof with a graphical user interface.

[0004]FIG. 4 is a front view of a fourth embodiment of a display screen or portion thereof with a graphical user interface.

[0005]FIG. 5 is a front view of a fifth embodiment of a display screen or portion thereof with a graphical user interface.

[0006]FIG. 6 is a front view of a sixth embodiment of a display screen or portion thereof with a graphical user interface.

[0007]FIG. 7 is a front view of a seventh embodiment of a display screen or portion thereof with a graphical user interface; and,

[0008]FIG. 8 is a front view of an eighth embodiment of a display screen or portion thereof with a graphical user interface.

[0009]The outermost broken line illustrates a display screen and forms no part of the claimed design. The remaining broken lines illustrate portions of the graphical user interface and form no part of the claimed design.