The portion of a change in quantity, amount or value.

The percentage difference of the current price from the previous trading day, week, quarter or year.

Show the fluctuations of crime from year to year and provide an added perspective to study crime. Calculated by taking the number of offenses for the current year, minus the number of offenses for the previous year. Then divide the difference by the number of offenses for the previous year, and multiply the dividend by 100.

By accessing base and current period data, the user is able to determine the percent of change between two periods of time. To calculate a percent change, find the difference between the current year rate and base year rate [subtract the base rate from the current rate], then divide the difference by the base year and multiply by a standardized multiplier (100 is used as the multiplier to present the change as a percent). The difference between the rates can show an increase (positive number) or decrease (negative number) and depending on the indicator, can depict a negative or positive change.

This calculates the percentage change in the price of a security from the previous trading day's closing price.

The percent change (PC) in a statistic over a given time interval is Percent change = (Final value - Initial value) / Initial value * 100. A positive PC corresponds to an increasing trend, a negative PC to a decreasing trend.

Price change (net or percent wise) between the current price and the close from the previous trading day.