the answer i got is wrong. can someone show me how tonget rhe roght answer?

You decide to buy 1.500 shares of stock at a price of $90 and an initial margin of 65 percent. What is the maximum percentage decline in the stock price before you will receive a margin call if the maintenance margin is 40 percent? (Do not round intermediate calculations. Enter your answer as a percent rounded to 2 decimal places. Input the amount as a positive value.)