|School|Location|Outright Titles|Shared Titles|Runners-Up|Total Finals|Last Title|Last Final|
|---|---|---|---|---|---|---|---|
|Methodist College Belfast|Belfast|35|2|25|62|2014|2014|
|Royal Belfast Academical Institution|Belfast|29|4|21|54|2007|2013|
|Campbell College|Belfast|23|4|12|39|2011|2011|
|Coleraine Academical Institution|Coleraine|9|0|24|33|1992|1998|
|The Royal School, Armagh|Armagh|9|0|3|12|2004|2004|
|Portora Royal School|Enniskillen|6|1|5|12|1942|1942|
|Bangor Grammar School|Bangor|5|0|4|9|1988|1995|
|Ballymena Academy|Ballymena|3|0|6|9|2010|2010|
|Rainey Endowed School|Magherafelt|2|1|2|5|1982|1982|
|Foyle College|Londonderry|2|0|4|6|1915|1915|
|Belfast Royal Academy|Belfast|1|3|5|9|1997|2010|
|Regent House Grammar School|Newtownards|1|1|2|4|1996|2008|
|Royal School Dungannon|Dungannon|1|0|4|5|1907|1975|
|Annadale Grammar School (now Wellington College)|Belfast|1|0|1|2|1958|1978|
|Ballyclare High School|Ballyclare|1|0|1|2|1973|2012|
|Belfast Boys' Model School|Belfast|1|0|0|1|1971|1971|
|Grosvenor High School|Belfast|1|0|0|1|1983|1983|
|Wallace High School|Lisburn|0|0|4|4|N/A|2007|
|Derry Academy|Derry|0|0|2|2|N/A|1896|
|Dalriada School|Ballymoney|0|0|1|1|N/A|1993|
|Galway Grammar School|Galway|0|0|1|1|N/A|1887|
|Lurgan College|Lurgan|0|0|1|1|N/A|1934|
|Omagh Academy|Omagh|0|0|1|1|N/A|1985|
|Sullivan Upper School|Holywood|0|0|1|1|N/A|2014|

Question: what is the difference in runners-up from coleraine academical institution and royal school dungannon?
Answer: 20