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When you want to calculate a percent, you take the first number divided by the "of number."
For this, it is 400/640=0.625
Then you take the answer and multiple it by 100, moving the decimal to the right 2 digits to get the percent.
0.625*100=62.5%

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โˆ™ 2009-11-11 02:44:33
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Q: What percent is 400 of 640?
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