Neary-Sighted

OK, so here's one sampling:

Number of Macintosh computers in the Neary experience that have crashed, destroying all records and data: 0
Number of Macintosh computers that Neary has owned or used at work or home in his lifetime: 4

Number of PCs that Neary has used that have crashed, destroying all records and data: 1, as of yesterday.
Number of PCs that Neary has owned or used in his lifetime: 2

OK, those of you who are good at math, can you help me with the percentages here? What kind of computer should I use next?
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