Eighty Percent 

The percentage of illness a person has to feel in order for them to be declared as "Not well mate"

I'm only feeling eighty percent, I'm not well mate

Eighty Percent by Baron Greenback December 10, 2008

Forty-Eight Percent Nation 

The America that opposes the current regime. The number is largely symbolic, as the actual percentage now polls at well beyond 50% most weeks.
See also 48% Nation.

The Forty-Eight Percent Nation had better get its act together, or it'll only have itself to blame.

Forty-Eight Percent Nation by colin s s February 19, 2005

Ninety eight percent

Just barely made the cut

She’s 98.5% your seriously lucky dude

Your friend is ninety eight percent

Ninety eight percent by Samosaswiththamostas August 23, 2018

eighty-five percenter 

An individual who always ( or almost always ) eats only eighty-five percent of what most people would eat in each meal, in order to enjoy an easier and better digestion, not feel stuffed and continue feeling somewhat light, enjoy a perfect ( thus easy ) bowel movement the next day, and stay healthy, happy, and young.

30-years ago, Bonnie told me about remembering to only eat eighty-five percent of each meal. Now I do that about ninety-seven percent of the time. That makes me an eighty-five percenter.

For those who prefer not to start a sentence with a number,

the traditional format follows

Thirty-years ago, Bonnie told me about remembering to only eat eighty-five percent of each meal. Now I do that about ninety-seven percent of the time. That makes me an eighty-five percenter.

eighty-five percenter by but for October 12, 2018