The ornamental design for a displayscreen or portion thereof with graphical user interface, as shown and described.
This application is a continuation-in-part of co-pending U.S. application Ser. No. 29/614,723 filed Aug. 22, 2017. Each specification is incorporated herein by reference, in its entirety.
The sole is a front view of a display screen or portion thereof with graphical user interface showing our new design.
In the drawing, the broken lines showing the display screen are for the purpose of illustrating environment and form no part of the claimed design. The remaining dotted, broken lines illustrating all text, icons, and greyscale elements of the graphical interface form no part of the claimed design.