Percentage Calculator in Common Phrases:
(Enter values into the blue boxes. Answers will appear in the black boxes.)
Answers are rounded to 7 decimal places.
Examples
Example 1: for the first calculator


Answer 

Show = Show example in calculator above. 

5 percent of 50 is ? 

2.5 

Show 

67 percent of 120 is ? 

80.4 

Show 

15 percent of 45 is ? 

6.75 

Show 

Example 2: for the second calculator


Answer 

Show = Show example in calculator above. 

20 is what percent of 80? 

25% 

Show 

0.5 is what percent of 1? 

50% 

Show 

100 is what percent of 1000? 

10% 

Show 

Example 3: for the third calculator


Answer 

Show = Show example in calculator above. 

What percent of 50 is 6 

12% 

Show 

What percent of 100 is 9 

9% 

Show 

What percent of 3 is 1.2 

40% 

Show 

Example 4: for the fourth calculator


Answer 

Show = Show example in calculator above. 

2 is 200 percent of what? 

1 

Show 

99 is 9 percent of what? 

1100 

Show 

0.6 is 10 percent of what? 

6 

Show 

Note: The second and third calculators both calculate the same thing (percent). They are just worded differently.
All of these calculators use the same general equation:
A/100 x B = C
where A, B, and C are defined by:
A% of B = C
If you know any two of the variables (A, B, C) you can solve for the third unknown variable.
Taking the general equation: A/100 x B = C and rearranging:
A = (C / B) x 100
B = C / (A / 100)
C = (A / 100) x B
Note: A% = A/100 because % means per 100
Alternatively, the Percentage Calculator on the home page can be used to answer
percentage problems like the examples above by choosing which box you want to be the answer box. Click the round button below the variable you need to find and it will become the answer box. Enter the two known variables into the blue boxes and the answer will be calculated.