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Calculate "What is X% of Y?" in seconds
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What is a percentage? The word "percentage" comes from the Latin per centum, meaning "by the hundred." A percentage is simply a way of expressing a number as a fraction of 100. For example, 50% means 50 out of 100, or 50/100, which equals 0.5.
Percentages are used everywhere in daily life:
The fundamental percentage formula is:
If you scored 42 points out of 50 on a test, what's your percentage score?
Solution:
Percentage = (42 / 50) × 100 = 0.84 × 100 = 84%
You scored 84%!