A teacher believes that the third homework assignment is a key predictor in how well students will do on the midterm. Let x represent the third homework score and y the midterm exam score. A random sample of last terms students were selected and their grades are shown below. Assume scores are normally distributed.

HW3Midterm13.359.81121.987.5399.753.7282596.2835.439.17413.266.09220.989.72918.578.9852086.215.473.2742593.259.752.2576.443.98420.279.76221.884.25823.192.9112387.8211.445.03414.971.86918.476.70415.160.4311565.1516.877.208Approximately what percentage of the variation in the Midterm grade is accounted for by the HW3 grade in this model?

Place your answer, rounded to 1 decimal place, in the blank. Do not use any stray punctuation marks or a percentage sign. For example, 78.9 would be a legitimate entry. ___%