27/30 = 90%
A value like 90% might show up as a score on a test, a phone battery level, or the amount of a project that’s finished. It usually means that nearly all of something is complete or successful.
To picture 90%, imagine a row of 10 equal boxes with 9 shaded in. It’s close to the whole, with just a small part left over.
One common mistake is treating 90% as exactly the same as “almost everything” in every situation. For example, 90% of a small group may be only a few people, while 90% of a large group could be thousands.
