Starbucks in Croatia. Starbucks opened its first store in Zagreb, Croatia in October 2010. In Zagreb, the price of a tall vanilla latte is 25.67 Croatian Kunas (kn or HRK). In New York City, the price of a tall vanilla latte is $2.68. The exchange rate between Croatian Kunas and U.S. dollars is kn5.6288 = $1. According to purchasing power parity, is the Croatian Kuna overvalued or undervalued? The percentage of overvaluation or undervaluation is s%. (Round to two decimal places.)