Percentages are a fundamental concept in mathematics and everyday life, representing a portion of a whole expressed as a fraction of 100. The word "percent" literally means "per hundred." Whether you're using a Percentage Calculator to determine discounts, grades, taxes, or statistics, understanding how to work with percentages is incredibly useful.
This is used when you want to determine what portion (or "part") of a total (or "whole") something represents, expressed as a percentage.
Formula: (Part / Whole) * 100 = Percentage
Tip: Ensure your "whole" is the total amount for accuracy.
This calculation helps you determine a specific portion of a whole when you know the percentage and the total.
Formula: (Percentage / 100) * Whole = Part
This is useful when you know a part and its percentage, and need to determine the total amount.
Formula: (Part / Percentage) * 100 = Whole
Common Uses: Finance (interest rates), Education (grades), Shopping (discounts)
Quick Trick: For 10%, move decimal left (10% of 300 = 30). For 5%, halve it (15).
Fractions to Percentages: (3/4) * 100 = 75%