Display screen or portion thereof with a graphical user interface

Description

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

FIG. 2 is a front view thereof, showing the design in a different broken-line context.

The outermost broken line rectangle illustrates a display screen or portion thereof and forms no part of the claimed design. The remaining broken lines illustrate portions of the graphical user interface that form no part of the claimed design.

Claims

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