90/3600 = 2.5%
A value like 90/3600, or 2.5%, can show up in everyday situations such as a store discount, a small service fee, or the portion of students in a large school who join a specific club. It describes a small part of a much larger total.
To picture 2.5% quickly, think of 25 out of 1,000, or about 1 out of every 40 items. It is a little more than 2%, but much less than 5%, so it should look like a very small slice of the whole.
A common mistake is to confuse 2.5% with 25%, especially when reading the decimal point or percent sign too quickly. Another point of confusion is assuming that 90 is a large share just because it is a noticeable number; compared with 3,600, it is only a small fraction.
