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Analyzing categorical data

James is interested in the relationship between weather conditions and whether the downtown train he sometimes takes runs on time. For a year, James records whether each day is sunny, cloudy, rainy, or snowy, as well as whether this train runs on time or is delayed. His results are displayed in the table below.
On timeDelayed
Sunny16716733
Cloudy11511555
Rainy40401515
Snowy881212
The percent of days that the train ran on time was
  • Your answer should be
  • an integer, like 66
  • a simplified proper fraction, like 3/53/5
  • a simplified improper fraction, like 7/47/4
  • a mixed number, like 1 3/41\ 3/4
  • an exact decimal, like 0.750.75
  • a multiple of pi, like 12 pi12\ \text{pi} or 2/3 pi2/3\ \text{pi}
%\%.

Round your answer to the nearest tenth of a percent.