Historic Center of the Port City of Odessa (Ukraine)
I don't know how the article arrived at this figure -
"As of the 2015 World Heritage List - 1031 the object of which 802 are cultural, 197 - natural and 32 - mixed.
19 of them are in Ukraine - it is 1.8% of all objects from the list of World Heritage.
Ukraine actually has 7 WHS (including Cherchonese in the Crimea). If they have also counted Ukraine's T List sites then that stands at 14 plus 2 extensions (Kiev and Beech Forests). Interestingly at least 4 of these 14 are situated in occupied Crimea!!
a. "Trading Posts and Fortifications on Genoese Trade Routes. From the Mediterranean to the Black Sea" - Port of Sudak
b. "The historical surroundings of Crimean Khans' capital in Bakhchysarai". 2012 T List, put forward 2014 and 15 but "incomplete and not examined"
c. "Cultural Landscape of "Cave Towns" of the Crimean Gothia"
d. "Bagçesaray Palace of the Crimean Khans" - seems to be on Ukraine's T List twice!! This version was added in 2003 and should presumably have been removed when the 2012 T list addition was made
So, at a push, removal of the dual counting of Bagçesaray reduces the T list to 13 new + 7 existing = still 20 i.e 1 more than the article.
I then see that one of the T List entries is "Mykolayiv Astronomical Observatory" added in 2007 but presumably superseded by "Astronomical Observatories of Ukraine" added in 2008 which includes Mykolayiv!! So remove another duplicate and Ukraine's T List comes down to 12 new (of which 3 are in the Crimea!) added to the existing 7 = 19!!
So that could have been how the article arrived at 19?? But still wrong of course on the %age. A coincidence I suspect!
Another "point of comment" which I have noticed about Ukraine's T List is that, although the "Trading Posts and Fortifications on Genoese Trade Routes. From the Mediterranean to the Black Sea" is presented as if it is to be a transnational nomination ( e.g the entry on the UNESCO web site for Ukraine states - "DESCRIPTION OF THE COMPONENTS WITHIN UKRAINE" I can't actually find ANY other country which has it (or even has had it in the past - though I may have missed something) on their T List!!