Percent vs Ratio

When to use each in English, with meaning, register, and examples.

 PercentRatio
MeaningA part of a whole, shown as a fraction out of 100.The relationship between two numbers showing how much of one there is compared to the other.
CEFR levelB1C1
Part of speechnoun
Usage notesCommonly used in mathematics, business, and statistics. Not usually used in casual conversation without context.Used in mathematics, sciences, and discussions about comparisons. Avoid in casual conversation unless the context is clear.

Frequently asked questions: Percent vs Ratio

What's the difference between "Percent" and "Ratio"?

"Percent" means: A part of a whole, shown as a fraction out of 100. "Ratio" means: The relationship between two numbers showing how much of one there is compared to the other.

When should I use "Percent" and "Ratio"?

They can all be used in everyday English.

Are "Percent" and "Ratio" the same CEFR level?

"Percent" is at B1, "Ratio" is at C1 on the CEFR scale.

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