Questions on percentage unit

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• How do you feel about fractions, decimals, and percentages?
• I think that some of it is easy, although I have a lot of problems whit fractions, but the rest I sort of know how to do. Now figured out a way that our math teacher taught us whit a dupe thing like the two butt checks.
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• What is confusing?
• The confusing thing  is not fractions but compound interest thing i didn't really understand.
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• What is easy?
• Easy thing, as i said before are decimals and percentages.
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• What do you want to know?
• How to do the compound interest thing.