What Relating percents ratios and decimals?

Answer 1

One number divided by another. The numbers need not be whole nor rational, as evidenced by pi/2 (which for those at an elementary level, is equal to 90 degrees).

Answer 2

Percentages are a way of expressing a part-to-whole relationship, often represented as a ratio or fraction out of 100. Ratios, on the other hand, compare two or more quantities, often expressed in the form of a fraction or ratio. Decimals are a way of representing fractions or ratios using a base-10 numbering system. All three - percents, ratios, and decimals - can be used interchangeably when expressing mathematical relationships or values. For example, a ratio of 2:5 can be expressed as a percentage of 40%, and as a decimal of 0.4.