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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 kornor, and a polish...

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 kornor, and a polish zloty is equal to $.44. By what percentage did the cross exchange rate 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?

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