This percentage increase calculator calculates the percentage of how much a number has increased/decreased compared to an initial figure or it can apply a % to a value or find the percent from an absolute value.

## How does this percentage increase calculator work?

- 1
^{st}tab named "Percentage Increase" allows you to determine if there is a percentage increase or decrease by comparing two values (initial vs. final, initial vs. reference, original vs. new) by considering the following rules. The percentage increase represents how much (as a relative measure) an initial given number has increased from the number used to compare with, while the decrease indicates how much an initial value has decreased in comparison to the given figure.

To discover whether is a %+/- these are the steps:

1: Make the difference between the reference and the initial number.

2: Divide the difference obtained at step one by the initial number and then multiply it by 100.

Percentage increase formula=[(Reference – Initial)/Initial]*100.

And so:

- if the difference between reference number and initial number is positive then it is a percentage increase (+).

- otherwise it is a percentage decrease (-).

Percentage change calculations are very often used in cases like:

- when trying to figure out what are the increases/decreases in prices (inflation);

- how salaries grow/maintain;

- what is the probability of an event to take place.

- 2
^{nd}tab named "Percentage Calculations" allows you to make other 2 types of operations:

a) By filling in the first line of fields **What is ...% of ...value **you can calculate the absolute value by applying the percent specified to the given number.

b) By filling in the second line of fields **What percent is ...value out of ...value **you can determine the relative percent of the first number out of the second one.