Use the following information on states of the economy and stock returns to calculate the expected return for Dingaling Telephone: $($Do not round intermediate calculations. Enter your answer as a percent rounded to $2$ decimal places.$)$

$\backslash$table$[[,$Probability of$],[$State of$,$State of$,$Security Return$],[$Economy$,$Economy,if State Occurs$],[$Recession$,\mathrm{.}30,-7\mathrm{.}00\%$