what is the {proportion} for {Angola} has {ethnic group} as {Europeans} ?
What percentage of Angola's population is European?
SELECT ?value WHERE { wd:Q916 p:P172 ?s . ?s ps:P172 wd:Q394067 . ?s pq:P1107 ?value}
select distinct ?value  where {
?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#subject> <http://wikidata.dbpedia.org/resource/Q916> .
?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#predicate> <http://www.wikidata.org/entity/P172> .
?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#object> <http://wikidata.dbpedia.org/resource/Q394067> .
?statement <http://www.wikidata.org/entity/P1107> ?value. 
} 

How many percent of the population of Angola is European?