Saxony sold short 356 shares at $36. The initial margin was 70%. Calculate the percentage margin if price increases to $46. Express your answer as a decimal with four digits after the decimal point

D'Addario sold short $1,016 worth of stock. He was required to deposit $907 cash as a performance bond. Calcluate D'Addario's HPR if stock price changes by -13% (a positive number here indicates price increases, while a negative number indicates price decreases)

Round all 4 decimal places