I don't much trust exit polls, beyond basic patterns anyway. Still, breaking things up...
Huge change:
Hawaii 58->70 (+12)
Indiana 34->45 (+11)
Vermont 58->68 (+10)
Significant change:
Delaware 45->53 (+8)
Colorado 42->50 (+8)
North Carolina 27->35 (+8)
Oregon 50->57 (+7)
Wisconsin 47->54 (+7)
Michigan 44->51 (+7)
North Dakota 35->42 (+7)
Virginia 32->39 (+7)
Utah 24->31 (+7)
District of Columbia 80->86 (+6)
Montana 39->45 (+6)
Kansas 34->40 (+6)
Nebraska 33->39 (+6)
Maine 53->58 (+5)
Obvious change but not especially dramatic:
California 47->52 (+5)
New Hampshire 50->54 (+4)
South Dakota 37->41 (+4)
Idaho 29->33 (+4)
Wyoming 28->32 (+4)
South Carolina 22->26 (+4)
Washington 52->55 (+3)
Minnesota 50->53 (+3)
New York 49->52 (+3)
Illinois 48->51 (+3)
New Jersey 46->49 (+3)
Pennsylvania 45->48 (+3)
Maryland 44->47 (+3)
No significant change:
Iowa 49->51 (+2)
Ohio 44->46 (+2)
Nevada 43->45 (+2)
Rhode Island 57->58 (+1)
Kentucky 35->36 (+1)
Texas 25->26 (+1)
Massachusetts 59->59 (nc)
Connecticut 51->51 (nc)
Florida 42->42 (nc)
Missouri 42->42 (nc)
Tennessee 34->34 (nc)
Alaska 33->33 (nc)
Oklahoma 29->29 (nc)
Georgia 23->23 (nc)
New Mexico 43->42 (-1)
West Virginia 42->41 (-1)
Arizona 41->40 (-1)
Significant fall:
Mississippi 14->11 (-3)
Arkansas 36->30 (-6)
Collapse:
Alabama 19->10 (-9)
Louisiana 24->14 (-10)