The regression equation y= -0.429x+83.53 approximates the percent of people in an audience who finish watching a documentary, y, given the length of the film in minutes. x. What percentage is the best prediction for the percent of people in an audience who will finish watching a documentary that is 30 minutes long? (Round your answer to the hundredths place and Do not include the percent sign in your answer as the computer knows it is a percentage)​