Problem 13-5 R-Squared (LO1, CFA7) You are given the following information concerning three portfolios, the market portfolio, and the risk-free asset: Portfolio 13.5% 12.5 2 Market Risk-free 34% 29 19 24 1.25 1.10 0.70 1.00 11.5 5.0 Assume that the correlation of returns on Portfolio Y to returns on the market is 0.85. What is the percentage of Portfolio Y's return that is driven by the market? (Round your answer to 4 decimal places.) R-squared