please help me understand these finance questions

E Homework: 5-1 MyLab Question 7, Problem 9-9 HW Score: 31.77%, 10.17 of 32 Homework algorithmic points Part 1 of 15 Points: 0 of 4 Save Trepak-The Russian Dance. Calculate the percentage change in the value of the ruble for the two different cross rates shown in the table [ for the five periods. Did the ruble fall further against the U.S. dollar or the Swiss franc? For the period from November 7, 2013 to November 7, 2014: The percentage change in Russian rubles per Swiss franc is %. (Round to two decimal places.) X Data table Russo-Swiss Cross-2015 Switzerland has long served as a cornerstone of banking conservatism and a safe port in a world of currency storms. Swiss banks had long been used by investors from all over the world as financially secure institutions that would preserve the depositor's wealth with confidentiality. A large part of the security offered was the Swiss franc itself. Russian citizens of wealth had used Swiss banks heavily in recent years as a place where they could shelter their capital from politics, both inside Russia and the outside (EU and US) world. But beginning in the fall of 2014 the Russian ruble's value began to slide against the Swiss franc, threatening their wealth. Exchange Rates Nov. 7, 2013 Nov. 7, 2014 Dec. 4, 2014 Dec. 16, 2014 Dec. 24, 2014 Jan. 16, 2015 Russian rubles per Swiss franc 35.281 48.256 56.253 70.286 55.365 76.642 Print Done