This is a free online percentage change calculator you can use to determine the percentage change (percentage increase or decrease) from one value to another

e.g. percentage increase from $2 to $3 is 50%

To calculate the percentage increase, you must minus the original number from the new number. E.g.

Increase = Original number - New Number

Then, divide the increaes by the original number and multiply by 100. E.g.

Percentage increase = increase amount ÷ Original Number × 100.

Similarly, to calculate the percentage decrease you must minus the new number from the original number. E.g.

Decrease = New number - original Number

Then, divide the decreaes by the original number and multiply by 100. E.g.

Percentage decrease = increase amount ÷ Original Number × 100.