Display Screen or Portion Thereof with Graphical User Interface

The file of this patent contains at least one drawing executed in color. Copies of this patent with color drawing(s) will be provided by the Office upon request and payment of the necessary fee.

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

FIG. 2 is a front view of a second embodiment of a display screen or portion thereof with a graphical user interface showing our new design.

The broken lines illustrate the environment of the design and portions of the display screen which form no part of the claimed design.