There is no standard functionality to such calculations that I’m aware of, so some extension to the default app is needed.
Using Templater could be a solution, where you for example could copy the table to the clipboard, and let the template do the calculations. Slightly better than the previous alternative. It also allows for insertion of the result into the note. This will produce a static result at the time of insertion of the template.
Using Advanced Tables is also an option, but to my knowledge it would require some additional columns. One for each alternative, aka one for “Run” and one for “Walk” and one for any other alternatives. After that is done, you could use sum functions and do some math to calculate the percentages. This option will therefore require some changes to your tables, and it will require a re-run of the tables functions if you change the table.