The link you provided took me to some document which is in Greek There is a picture there but i cannot verify that it belongs to UNPO Then the most updated information is usually taken as the actual information Or should we stick to infos from centuries ago CIA is not the world official source of information I have seen that sometimes it has mistakes and erroneous  information on some countries Anyway i checked it andSurprise this is what i saw Ethnic groups  Field info displayed for all countries in alpha order Albanian  Greek  other  Vlach Roma Gypsy Serb Macedonian Bulgarian  est note in  other estimates of the Greek population ranged from  official Albanian statistics to  from a Greek organization So the percentage is  and not  like you claim There is no source where it says that it is  thus it has to be removed And bringing the claim of a Greek NGO is not reliable I can bring you tens of claims of Albanian and other NGO which claim that Greek population in Albania is smaller than  or that ethnic Albanian population in Greece is higher than