The ornamental design for a displayscreen or portion thereof with icon, as shown and described.
The patent or application file contains at least one drawing executed in color. Copies of this patent or patent application publication with color drawing(s) will be provided by the Office upon request and payment of the necessary fee.
FIG. 1 is a face view of a first embodiment of a design for a display screen or portion thereof with icon, in color; and,
FIG. 2 is a second embodiment thereof, in grayscale.
The broken lines showing the display screen form no part of the claimed design.