Last year a dollar was equal to 7 Swedish kronor, and a Polish zloty was equal to

Question:

Last year a dollar was equal to 7 Swedish kronor, and a Polish zloty was equal to $.40. Today, the dollar is equal to 8 Swedish kronor and a Polish zloty is equal to $.44. By what percentage did the cross of the Polish zloty in Swedish kronor (that is, the number of kronor that can be purchased with one zloty) change over the last year?
Exchange Rate
The value of one currency for the purpose of conversion to another. Exchange Rate means on any day, for purposes of determining the Dollar Equivalent of any currency other than Dollars, the rate at which such currency may be exchanged into Dollars...