In November 2016 the average wage of the Russian worker is 36,115 rubles per month, and in 2013 it was 21,300 rubles per month. If the current exchange rate equals 1 USD = 64.0 RUB, while in 2013 it was 1 USD = 32.6 RUB, is the Russian worker better off or worse off in US dollars now than before, and by what percentage?