Math
Percentage Calculator
Calculate what a percentage is of a number and the base when you know the part.
1.What is 20% of 100?
%
of
20
2.50 is 20% of what?
is
%
of
250
3.Change from 100 to 150?
to
+50%
Frequently Asked Questions
How do I calculate a percentage of a number?
Simply enter the percentage and the total number. The calculator will multiply them to give you the result.
Can I calculate percentage increase or decrease?
Yes, use the 'Percentage Change' mode to find the difference between two values expressed as a percentage.
What is the formula for percentage?
The basic formula is: (Part / Whole) * 100 = Percentage.