We claim the ornamental design for a display screen or portion thereof with graphical user interface, as shown and described.
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 another front view of FIG. 1, in which an oven in broken lines is provided to illustrate an example environment.
The broken lines in the figures show portions of the display screen or portion thereof with graphical user interface and text which form no part of the claimed design.
The long dash short dash broken line in FIGS. 1 and 2 represent the bounds of the claimed design and form no part thereof. The broken lines showing of the oven in FIG. 2 are included for the purpose of illustrating environmental structure and the broken lines showing of portions of the graphical user interface in both figures are included for the purpose of illustrating portions of the article; all broken lines form no part of the claimed design.