I know what they want to imply by "100 %"
But my brain is telling me "One significant figure? Better put a +/-5% range of error on that."
This isn't a criticism of the company, I'm sure they are professionals doing their best, but if I saw a number like that in a vendor bid
the voices in my head my numeric OCD would ask exactly how many zeros worth of uptime availability really were promised after the first digit.