Last year a dollar was equal to 120 Japanese yen and a dollar was equal to 75 Indian rupees. This year a dollar is worth 125 Japanese yen and 80 rupees (so the dollar appreciated against both currencies). By what percentage did the cross exchange rate of the Indian rupee in Japanese yen (that is, the number of yen that can be purchased with one rupee) change over the last year? (Hint: Be sure to take all figures to 4 digits after the decimal point.)