Display screen or portion thereof with a graphical user interface

FIG. 1 is a front view of a display screen or portion thereof with changeable graphical user interface showing a first image;

FIG. 2 is a front view of a second image thereof;

FIG. 3 is a front view of a third image thereof;

FIG. 4 is a front view of a fourth image thereof;

FIG. 5 is a front view of the icon shown in FIG. 1 shown on a partial device;

FIG. 6 is a front view of the icon shown in FIG. 2 shown on a partial device;

FIG. 7 is a front view of the icon shown in FIG. 3 shown on a partial device; and,

FIG. 8 is a front view of the icon shown on FIG. 4 shown on a partial device.

The broken line showing of the device illustrates environment. The remainder of the broken lines illustrate portions of the display screen or portion thereof with changeable graphical user interface. The broken lines form no part of the claimed design. The subject matter in this patent includes a process or period in which an image changes into another image. This process or period forms no part of the claimed design.