FIG. 1 is the first image in a sequence of a display screen or portion thereof with transitional graphical user interface showing our 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 another view of FIG. 1, but shown without the broken lines for clarity of illustration;
FIG. 7 is another view of FIG. 2, but shown without the broken lines for clarity of illustration;
FIG. 8 is another view of FIG. 3, but shown without the broken lines for clarity of illustration;
FIG. 9 is another view of FIG. 4, but shown without the broken lines for clarity of illustration;
FIG. 10 is another view of FIG. 5, but shown without the broken lines for clarity of illustration;
FIG. 11 is an enlarged view of the encircled portion in FIG. 6;
FIG. 12 is an enlarged view of the encircled portion in FIG. 7;
FIG. 13 is an enlarged view of the encircled portion in FIG. 8;
FIG. 14 is an enlarged view of the encircled portion in FIG. 9; and,
FIG. 15 is an enlarged view of the encircled portion in FIG. 10.
The dash-dash broken lines in the figures showing the display screen or portion thereof form no part of the claimed design.
The remaining dash-dash broken lines in the figures showing portions of the transitional graphical user interface form no part of the claimed design.
The dot-dot-dash broken lines encircling portions of the claimed design that are illustrated in enlargements form no part of the claimed design.
The appearance of the transitional graphical user interface sequentially transitions between the images shown in FIGS. 1 through 5. The process or period in which one image transitions to another forms no part of the claimed design.