Display Screen with Transitional Graphical User Interface

The file of this patent contains at least one drawing executed in color. Copies of this patent with color drawing(s) will be provided by the Office upon request and payment of the necessary fee. FIG. 1 is a front view of a display screen or portion thereof with a transitional graphical user interface showing a first image in a sequence according to the claimed design; FIG. 2 is a front view of a second image in the sequence; FIG. 3 is a front view of a third image in the sequence; FIG. 4 is a front view of a fourth image in the sequence; FIG. 5 is a front view of a fifth image in the sequence; FIG. 6 is a front view of a sixth image in the sequence; FIG. 7 is a front view of a seventh image in the sequence; FIG. 8 is a front view of an eighth image in the sequence; FIG. 9 is a front view of a ninth image in the sequence; FIG. 10 is a front view of a tenth image in the sequence; FIG. 11 is a front view of an eleventh image in the sequence; FIG. 12 is a front view of a twelfth image in the sequence; FIG. 13 is a front view of a thirteenth image in the sequence; FIG. 14 is a front view of a fourteenth image in the sequence; FIG. 15 is a front view of a fifteenth image in the sequence; FIG. 16 is a front view of a sixteenth image in the sequence; FIG. 17 is a front view of a seventeenth image in the sequence; FIG. 18 is a front view of an eighteenth image in the sequence; FIG. 19 is a front view of a nineteenth image in the sequence; FIG. 20 is a front view of a twentieth image in the sequence; FIG. 21 is a front view of a twenty-first image in the sequence; FIG. 22 is a front view of a twenty-second image in the sequence; and, FIG. 23 is a front view of a twenty-third image in the sequence. The outermost broken-line border in each figure shows a portion of a display screen. The remaining broken lines show portions of the graphical user interface. The broken lines form no part of the claimed design. The appearance of the transitional image sequentially transitions between the images shown in FIG. 1 to FIG. 23 . The process or period in which an image transitions to another image forms no part of the claimed design.