The phrase "percent likelihood" refers to the probability or chance of something happening, expressed as a percentage. It indicates how likely or probable an event or outcome is to occur. Full definition
Dark blue areas approach 100 percent likelihood water will enter the zone. (sciencedaily.com)
To put that in context, experts were only willing to commit to a 90 percent likelihood when the last report was released, in 2007. (salon.com)
«Instead of having a few percent likelihood of seeing a signal in a year, we should see a signal once a week or once a month,» says Caltech physicist Jay Marx, LIGO's executive director. (discovermagazine.com)