If you take '2' and '4', then 2 is 50% of 4.
To calculate that, use (2/4)*100 to get the percentage.
So to find out what percentage number 'x' is of number 'y', use (x/y)*100.
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A ratio is a comparison of one number in relation to another number. A percent is a comparison of one number in relation to One Hundred.
Divide the figure (usually the smaller one) into the base figure (usually larger). Then to get the percent figure, multiply the fraction by a hundred. For example, in a class 34 students, 11 are male, what percent of the class is male? 11/34=0.32 then 0.32X100=32%.
Answer: Value after increase = Base X Percent for new Value Hope this helps :)
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A as a percentage of B: (100 x A)/B