Display screen or portion thereof with a graphical user interface

Abstract

Description

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

FIG. 2 is a front view of a second embodiment thereof.

The remaining broken lines depict environmental subject matter only and form not part of the claimed design.

Claims

We claim the ornamental design for a display screen or portion thereof with a graphical user interface, as shown and described.