Rate of Change & Rate of Change Percent
Rate of Change is simply the net change in Price over the selected period. In the Daily chart below, IBM is down -$20.64 compared to 50 days ago. The Rate of Change Percent reflects the same reading on a percentage basis. IBM is down -11.83% over the last 50 days.
x is the period which must be an integer.
A 50 period rate of change can be written as follows.
C - C50
A 50 period rate of change percent can be written as follows.
100 * (C / C50 - 1)