One month ago, the spot rate for the Japanese yen was 1 USD = 123.27. JPY. Today, you observe that the spot rate is 1 USD = 128.18 JPY, How much has the value of the Japanese yen appreciated (+) or depreciated () relative to the dollar? Submit your final answer as a percentage rounded to two decimal places (Ex. 0.00% ). (Submit a currency appreciation as a positive and a currency depreciation as a negative.)