Display Screen or Portion Thereof Having a Graphical User Interface

FIG. 1 is a view of a first embodiment of a display screen or portion thereof having a graphical user interface;

FIG. 2 is a view of a second embodiment of a display screen or portion thereof having a graphical user interface;

FIG. 3 is a view of a third embodiment of a display screen or portion thereof having a graphical user interface;

FIG. 4 is a view of a fourth embodiment of a display screen or portion thereof having a graphical user interface;

FIG. 5 is a view of a fifth embodiment of a display screen or portion thereof having a graphical user interface;

FIG. 6 is a view of a sixth embodiment of a display screen or portion thereof having a graphical user interface;

FIG. 7 is a view of a seventh embodiment of a display screen or portion thereof having a graphical user interface;

FIG. 8 is a view of an eighth embodiment of a display screen or portion thereof having a graphical user interface;

FIG. 9 is a view of a ninth embodiment of a display screen or portion thereof having a graphical user interface;

FIG. 10 is a view of a tenth embodiment of a display screen or portion thereof having a graphical user interface;

FIG. 11 is a view of an eleventh embodiment of a display screen or portion thereof having a graphical user interface; and,

FIG. 12 is a view of a twelfth embodiment of a display screen or portion thereof having a graphical user interface.

The black dot-dashed broken lines depict the display screen or portion thereof and form no part of the claimed design. The white dot-dashed broken lines depict a boundary of the claimed design. The white dot-dashed broken lines and the contents within form no part of the claimed design. The dashed broken lines depict portions of the display screen or portion thereof having a graphical user interface that form no part of the claimed design.