The ornamental design for a displayscreen or portion thereof with graphical user interface, as shown and described.
1. Display screen or portion thereof with graphical user interface
1.1 is a front view of a display screen or portion thereof with graphical user interface embodying our new design.
The broken lines showing the display screen or a portion thereof are for the purpose of illustrating environment and form no part of the claimed design.
The broken lines showing the elements on the display screen illustrate portions of the graphical user interface and form no part of the claimed design.