How do you calculate percent?

Answer 1

The simplest way to calculate percentage is to divide the given amount by the total amount and then multiplying the answer by 100 to get the percentage of the given amount with respect to the total amount.

The equation can be put up as follows:

(Given amount/ Total amount) x100

For example if John scores 60 out of 75 in mathematics we can find the percentage of his marks by dividing 60 by 75 which comes to be 0.8 and then multiplying it by 100 which gives us the percentage of his marks in math which is 80%.

(60/75) x 100 = 80%

When there are a number of given amounts (variables) and we have to find their individual percentages then we have to add the given amounts to determine the total amount after which by the above mentioned procedure we can easily find the individual percentages by dividing each given amount by the total amount and then multiplying it by 100.

Percentage questions are often worded in different ways like how much is x% of y (80% of 75). Using the above example we can find the answer by multiplying 75 by 80 and then dividing the amount by 100 to find the answer which is 60. To calculate percentage increase or decrease between two numbers just subtract the smaller number from the greater and then divide the answer by the original one and then multiply it by 100 to determine the percentage increase or decrease. For example to calculate the percentage increase from 20 to 30 we subtract 20 from 30 and then divide the number obtained which is 10 by the original number which is 20 and then multiply the obtained number which is 0.5 by 100 to get the percentage increase which is 50%.

Answer 2

Lets say this is your question

Megan's class of 30, 16 students have brown hair and 3 are red heads. Calculate the percent of students in Megan's class with these two colors of hair

so you do

16 + 3 = 19 19 out if 30

divide 19 by 30 x by 100 and u have ur %