Assume that 1 unit of Currency Y costs 0.50 units of Currency X,1 unit of Currency Z costs 7.99 units of Currency Y, and 1 unit of Currency Z costs 3.97 units of Currency X. By what percent is Currency Z mispriced relative to Currency Y ? If Z is overpriced, type a positive number and if Currency Z in underpriced, type a negative number. Go out four decimals - for example, if Z is underpriced by 2.25%, type .0225