please make sure the answer has four decimal places, and i always appreciate a step by step to learn the material. Thank you, and I will upvote!

You are given the following information concerning three portfolios, the market portfolio, and the risk-free asset: Assume that the correlation of returns on Portfolio Y to returns on the market is .82. What percentage of Portfolio Y's return is driven by the market? (Enter your answer as a decimal not a percentage. Round your answer to 4 decimal places.)