ou are given the following information concerning three portfolios, the market portfolio, and the risk-free asset:

Portfolio	RP		P		P
X	15.5	%	36	%	1.35
Y	14.5		31		1.15
Z	7.4		21		0.60
Market	11.7		26		1.00
Risk-free	7.0		0		0

Assume that the correlation of returns on Portfolio Y to returns on the market is 0.87. What is the percentage of Portfolio Ys return that is driven by the market? (Round your answer to 4 decimal places.)