Display Screen or Portion Thereof with a Graphical User Interface

FIG. 1 is a front view of a display screen or portion thereof with a graphical user interface showing a first image according to our new design;

FIG. 2 is a second image thereof;

FIG. 3 is a third image thereof;

FIG. 4 is a fourth image thereof;

FIG. 5 is a fifth image thereof;

FIG. 6 is perspective view of a handheld device with the display screen or portion thereof showing the first image;

FIG. 7 is a perspective view thereof showing the second image;

FIG. 8 is a perspective view thereof showing the third image;

FIG. 9 is a perspective view thereof showing the fourth image; and,

FIG. 10 is a perspective view thereof showing the fifth image.

The outermost broken lines in FIGS. 1 - 5 showing a display screen or portion thereof, and broken lines within showing elements of the graphical user interface illustrate portions of the article that form no part of the claimed design. The additional broken line in FIGS. 6 - 10 showing an electronic device illustrate environmental subject matter and form no part of the claimed design.

The appearance of the graphical user interface transitions sequentially between FIGS. 1 - 5 and FIGS. 6 - 10 , respectively. The process or period in which one image transitions to another forms no part of the claimed design.