Question: How do I get a % sign and a subscript in my axis title?

Hi,

I would like the title of my y axis to say "SaO2 (%)".  When I put in "SaO[2] (%)" the output is SaO[2] (%); However, when I put in SaO[2] (%) the output is "SaO2 PLOT (...) "  How can I get both parts correct (i.e., the subscript of the 2 and the displaying of the percent sign)?

 

Thanks!

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