Display Screen or Portion Thereof with Graphical User Interface

The patent or application file contains one or more drawings executed in color. Copies of this patent or patent application publication with color drawings will be provided by the Office upon request and payment of the necessary fee. FIG. 1 is a front view of a display screen or portion thereof with graphical user interface showing a first embodiment of my new design; FIG. 2 is a front view of a display screen or portion thereof with graphical user interface showing a second embodiment of my new design; FIG. 3 is a front view of a display screen or portion thereof with graphical user interface showing a third embodiment of my new design; and, FIG. 4 is a front view of a display screen or portion thereof with graphical user interface showing a fourth embodiment of my new design. In FIGS. 3 and 4 , the grayscale shading represents a contrast in appearance. The outermost broken lines in the figures show a display screen or portion thereof, and form no part of the claimed design. The dot-dash broken lines represent boundaries of the claimed design. The other broken lines in the figures show portions of the graphical user interface that form no part of the claimed design.