The ornamental design for a displayscreen or portion thereof with animated graphical user interface, as shown and described.
FIG. 1 is a first image in a sequence for a display screen or portion thereof with animated graphical user interface showing our new design;
FIG. 2 is a second image thereof;
FIG. 3 is a third image thereof;
FIG. 4 is a fourth image thereof; and,
FIG. 5 is a fifth image thereof.
The appearance of the graphical user interface transitions between the images shown in FIGS. 1-5. The process or period in which one image transitions to another forms no part of the claimed design. The even-length broken lines depicting the text, symbols, and remainder of the graphical user interface forms no part of the claimed design. The uneven-length broken lines depicting the display screen form no part of the claimed design.