I would think that number would be similar to other teams too. Odds are, if you're a multi-time transfer, you're just not as good as you think.
What I learned from studying 2,300 transfers in the college football portal window
Of the 1,194 players who left Power 4 schools, 42 percent signed with those programs and 31 percent signed with Group of 5 schools.
fwiw:
Of the 1,194 players who left Power 4 schools, 505 (42.3%) ended up at P4 schools, 367 (30.7%) moved down to Group of 5 programs and another 120 (30.7%) signed with FCS and lower-division programs.
At the time of the article, 16.9% of the P4 transfers were unsigned.