Percentage Increase / Decrease Calculator Online Percentage Increase/Decrease Calculator Welcome to the Percentage Calculator Enter the Number increase/decrease from to Press to calculate About Percentage Increase / Decrease Calculator What is percentage increase and its Formula ? The percentage increase formula is the ratio of value increased to the original value and multiplied by 100. It is expressed in percentage. If there is an increase in the value of anything, then there is a percentage increase. The Percentage Increase Formula is given as, Percentage Increase =( Increased Value -Original Value) × 100/ Original Value What is Percentage Decrease and its Formula ? When there is a decrease in the value of something, then, to know the percentage decrease, that is, to know the decrease per hundred, - this formula is used. It is the ratio of the decrease of the decreased value to the original value mult...