Percentage Calculator
Calculate percentages in multiple ways
What is X% of Y?
What is
% of
?
50
Result
X is what % of Y?
is what % of
?
25%
Percentage
Percentage Change
From
to
+25%
Change
Increase/Decrease by %
increased by
%
115
New Value
GPA Calculator
Course Name
Grade
Credits
0.00
Cumulative GPA
Total Credits: 0
Percentage Formulas
Basic Percentage
To find X% of Y: multiply Y by X/100. Example: 25% of 200 = 200 x 0.25 = 50
Percentage Change
Change = ((New – Old) / Old) x 100. Positive result means increase, negative means decrease.
Common Percentages
10% = 1/10, 20% = 1/5, 25% = 1/4, 33.3% = 1/3, 50% = 1/2, 75% = 3/4
GPA Scale
The US uses a 4.0 scale. GPA is weighted by credit hours: multiply each course’s grade points by its credits, sum all, then divide by total credits. Latin honors: Summa Cum Laude (3.7+), Magna Cum Laude (3.5+), Cum Laude (3.2+).