You are given the following information concerning three portfolios, the market portfolio, and the risk-free asset: Portfolio 12% opp 29% 1.25 1.10 14 0.75 1.00 24 19 Market Risk-free Assume that the correlation of returns on Portfolio Y to returns on the market is 0.75. What is the percentage of Portfolio Y's return that is driven by the market? (Round your answer to 4 decimal places.) Y's return explained by market