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

Portfolio	RP		P		P
X	15.5	%	37	%	1.65
Y	14.5		32		1.30
Z	8.2		22		0.80
Market	10.8		27		1.00
Risk-free	6.4		0		0

Assume that the correlation of returns on Portfolio Y to returns on the market is 0.74. What is the percentage of Portfolio Ys return that is driven by the market? (Round your answer to 4 decimal places.)