Display Screen or Portion Thereof with Graphical User Interface

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

FIG. 2 is a front view of the design of FIG. 1 shown in the context of a different environment.

The long-short-short dashed lines in FIGS. 1 and 2 show a display screen, and form no part of the claimed design. The remaining broken lines illustrate the environment of the claimed design and form no part thereof.

The grayscale fill in in FIGS. 1 and 2 represents a darker and contrasting color to adjacent regions. No particular color is being claimed.