I'm writing some documentation for software and instead of writing "the difference between a given percentage and the total" I'm wondering if there is a single word term for this concept. I cannot think of one. My tentative variable name for this is "inverse_of_percent", though I know this is mathematically inaccurate, and I though I enjoy using concise terms, I am inclined to use accurate terms as well.
For clarity, the term I'm looking for would essentially define "x" here:
45% + x = 100%
"Variable" is not a usable option as it has a different meaning in the jargon. I am not a mathematician, so please forgive my ignorance.
Thank you in advance for any replies.
A better word than inverse in this situation would be complementary. With respect to probability, if we have an event A with 45% chance of occurrence, the complement of event A (basically any other possible occurrence that is not A) will have 100 - 45% = 55% chance.
Although it's usually used in reference to events, it's better suited than inverse to refer to the percentage above.