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Question 2. (6 marks) Bitcoin is an increasingly popular cryptocurrency, despite being very volatile. a) (3 marks) The following table shows the closing value of a bitcoin (in US dollars) for each Thursday, from March 18, 2021 to May 20, 2021. Date Value in SUS March 18 57,585.92 March 25 51,704.16 April 1 59 095.81 April 8 58,323.95 April 15 63,314.01 April 22 51,762.27 April 29 53,555.11 May 6 56,396.51 May 13 49,716.19 May 20 40,782.74 Find the average weekly variation (in percentage) in the value of bitcoin from March 18, 2021 to May 20, 2021. Round your answer to 2 decimals