A free online tool for calculating the percentage.

## Tutorial

##### 'What percentage of' Calculation

This calculation solves - What is 15 percent of 100?. This is a basic percentage calculation and expressed in terms of a 15/100 ratio. This is done by multiplying by 100. The Formula is -
(15/100)*100 = 15.

##### 'What number is a percentage of' Calculation

This calculation solves – 339 is what percent of 1000?. This calculation is very near to the first one however this gives the percentage value for 339 of 1000. The Formula is -
(339*100)/1000 = 33.90.

##### 'Increase from or Decrease from' Calculation

This calculation solves – Increase from 0.30 to 10000?. Seems this calculation is different from above two however, this is still same as we write the formula as ratio of two numbers. The Formula is -
((10000-0.30)/0.10)*100 = 3333233.33

##### Multiplication by a percentage

This calculation solves – 100 multiplied by 45%?. Its a basic calculation and as simple as writing 34% as a ratio of 34/100. The Formula is -
(100*45)/100 = 45

##### Division by a Percentage

This calculation solves – 43 divided by 85?. Unlike multiplication by a percentage calculation and another time involves writing a percentage as a ratio with 100 as the denominator. The Formula is -
43/(85/100) = 50.59

##### Increase by a Percentage

This calculation solves – Increase 70000 by 9.5%?. This one same as multiplication by a percentage calculation as shown above but the only dissimilarity is that we simply add the number we are multiplying by. The Formula is –
70000*(1+(9.5/100)) = 76650

##### Decrease by a Percentage

This calculation solves – Decrease 70000 by 9.5%?. Unlike "increase by a percentage" calculation as given above now its doing subtract instead of add. The Formula is –
70000-(70000*(9.5/100)) = 63350