Source: Safalta.comWe'll go through how to quickly compute percentages in this tutorial. Students will have a better understanding of how to calculate percentages with ease. When students are intending to compute their scores for school and competitive examinations, learning how to calculate percentages might be helpful. Download these FREE Ebooks:
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How Do You Determine A Percentage?The Latin adverb "percent" means "by the hundred." The 16th century saw its invention. The abbreviation was later changed to %. Later, the period was eliminated, and the two words were merged to form the term "percent." Brief explanations employ the annotation sign %.
(Actual Value / Total Value) * 100 = Percentage
Converting a fraction to a percentage when calculating percentagesConsider a scenario where pupils are asked to convert 2/7 to a percentage. 2/7 is 0.28 in decimal form. When you multiply 0.28 by 100, you get 28%. However, pupils are not required to perform calculations manually every time. They can mentally memorise the % formula and enter quantities to perform calculations.
Different Ways to Calculate PercentagesStudents should be aware that there are two ways to calculate percentages—one is addictive, and the other is subtractive—now that they have gone through the examples listed below.
- When calculating an additive percentage, a number's value is added. This occurs in scenarios involving GST filing, the insertion of additional coupons, and other situations of a similar nature.
- Calculating a percentage by subtracting involves deducting the value from the starting point. This occurs while using discount codes, applying for refunds of the original amount, and in more situations like these.
Here is the Example for your better understanding
Example of Using the Percentage Formula to Calculate PercentagesLet's say that you paid $599 for a shirt. On how to determine what you must pay at the bill counter, however, there is a 5% GST.
- Calculate 5% of 599 to get: 5% * 599 = (5/100) * 2995 = 29.95
- You must thus pay an additional 29.95 at the counter.
- 599 plus 29.95 equals 628.95 when added together.
- This means that you must pay Rs 629 at the counter.
How Can I Use the Percentage Formula To Calculate Percentages?Let's imagine you are viewing an advertising and it mentions a laptop that is 20% off. After the reduction, the cost is Rs 55,000. Find out what the actual cost was.
Here, we have the following information:
- Discount given: 20%
- Price after discount: Rs 55000
Let us assume that the actual price of the laptop is Rs X.
- Therefore, Rs X – (20% of Rs X) = Rs 55000
- Rs X – Rs (20/100) × X = Rs 55000
- Or, Rs X – Rs (X/5) = Rs 55000
- Or, Rs (4X/5) = Rs 55000
- Therefore, X = Rs (55000 × 5)/4 = 68750
How Do I Calculate a Change in Percentage?The variability of change over time is referred to as percentage change. It serves a variety of functions. The score for the change % is computed by comparing the older and newer numbers. The order value is often included in the comparison. The calculation for percentage change is as follows:
Percentage Change = ((New Value – Old Value ) / Old Value) * 100
- When using the aforementioned calculation, the%age change will be negative if the new value is lower than the previous value. That suggests that the proportion has decreased.
- A positive value will arise if the new value exceeds the previous value. That suggests that there has been a percentage growth.
How Can Percentage Be Removed?There are two possible ways to subtract a percentage.
- One method is to divide by 100 after removing the percentage indication. The number will become a decimal number as a result. as in 21.6% = 21.6/100 = 0.216
- Using the calculation for percentages. Finding X when P% of X is Y can be used to do this. The equation is Y/P%=X. Consider the question: What number is 20% of 25, for instance.