Englishfor English speakers
percentage
Noun
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A percentage of something is the amount as a fraction of 100.
The second school has a much higher percentage of girls (62%).
diagram
Noun
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A diagram is a drawing, or sketch, to show how something, such as a machine, works.
You can see from this diagram that the electric switch is very simple, in fact.
Here is a diagram of some machines in a power plant.