Defining $Y _ { t }$ As Current Output $$\bar { Y } _ { t }$$

True/False

Defining $Y _ { t }$ as current output, $$\bar { Y } _ { t }$$ as potential output, and $\tilde { Y } _ { t }$ as short-run fluctuations, the equation $\tilde { Y } _ { t } = \left( Y _ { t } - \bar { Y } _ { t } \right) / \bar { Y } _ { t }$ is defined as the percentage deviation of current output from potential output.