The structure of the word "bi" has two situations, one is "how much" and the other is "bi", that is, comparative relationship.

What's the ratio? Want to know who is more and who is less. We can also think about who is a large number and who is a decimal.

Than "points". There are multiples, fractions and percentages, and the analysis methods are all the same.

For example:

A is 20% more than B.

The meaning of the question is: take B as the unit 1, and A is B (1+20%).