Consider the following information concerning three portfolios, the market portfolio, and the risk-free asset:

portfolio	return on portfolio	standard deviation of portfolio	beta
x	14.5%	35%	1.30
y	13.5	30	1.25
z	8.4	20	.90
market	11.6	25	1.00
risk-free	6.0	0	0

Assume that the correlation of returns on Portfolio Y to returns on the market is .86. What is the percentage of Portfolio Ys return that is driven by the market? (Enter your answer as a percent rounded to 2 decimal places. Omit the "%" sign in your response.)