Display Screen or Portion Thereof Including Graphical User Interface

The patent or application file contains at least one drawing executed in color. Copies of this patent or patent application publication with the color drawing will be provided by the Office upon request and payment of the necessary fee. The FIGURE is a front view of a display screen or portion thereof including a graphical user interface. In the drawing, the outermost broken lines in the FIGURE show a display screen or portion thereof and form no part of the claimed design. The other dotted lines represent portions of the graphical user interface and form no part of the claimed design. The dotted lines with extended linear segments in the FIGURE are boundary lines that do not exist in the reality of the display screen or portion thereof including a graphical user interface and are used to isolate certain disclaimed regions from claimed regions.