Fractions are parts of a whole. You can divide a whole number into a fraction in a couple of ways. The way I would suggest is think of a whole as a pie. If you cut the pie into lets say, six equal pieces you would have sixths. 1/6 is a basic fraction. Then you can get into more complicated fractions such as improper fractions. Improper fraction that have a whole number mixed into it. so take for example, 4/3. 4/3 is improper because 3/3 + 1. So 4/3 is = to 1 1/3.

Decimals are another way to show parts of a whole. Fractions and decimals are communative. For example, 1/2 is = to 0.5 because 0.5 = a half of a whole, which is 1/2. Simple! But then decimals go into more complicated equations such as 0.01, which is 1/100. The more 0s you put after the decimal, the smaller the fraction it is equal to.

Percents are also communative to fractions and decimals. 50% is equal to 1/2 and 0.5. Then there are percents that have almost nothing that are equal to them. Like 1% is only equal to 0.01, but fractions can be complicated, so there is and infinite amount of equivalent fractions in the world. As long as there is a higher number, there is one more equivalent fraction in the world.