The ornamental design for a displayscreen or portion thereof with animated graphical user interface, as shown and described.
FIG. 1 is the first image in a sequence for a display screen or portion thereof with animated graphical user interface showing my new design;
FIG. 2 is the second image thereof;
FIG. 3 is the third image thereof;
FIG. 4 is the fourth image thereof;
FIG. 5 is the fifth image thereof;
FIG. 6 is the sixth image thereof;
FIG. 7 is a seventh image thereof; and,
FIG. 8 is an eighth image thereof.
The appearance of the animated graphical user interface transitions sequentially between the images shown in FIGS. 1-8. The process or period in which one image transitions to another forms no part of the claimed design. The dot-dash broken lines showing a display screen or portion thereof and elements of the graphical user interface, as well as the regular broken lines showing elements of the graphical user interface illustrate portions of the article. None of the broken lines form part of the claimed design.