Display Screen or Portion Thereof with Graphical User Interface

The FIGURE is a front view of a display screen or portion thereof with graphical user interface showing the claimed design. The outermost dashed broken lines in the FIGURE show a display screen or portion thereof, and form no part of the claimed design. The other dashed broken lines in the FIGURE show portions of the graphical user interface that form no part of the claimed design. The dot-dash broken lines show boundaries that form no part of the claimed design. The FIGURE is illustrated to show similar and contrasting appearance. Lines that are illustrated in solid black have one appearance, and areas that are illustrated with gray shading have a different appearance. No particular color or appearance is claimed.