The change in the magnitude of the volume of an ideal gas when a small additional pressure $\Delta P$ is applied at a constant temperature, is the same as the change when the temperature is reduced by a small quantity $\Delta T$ at constant pressure. The initial temperature and pressure of the gas were 300 K and 2 atm respectively. If $\left|\Delta T\right|=C\left|\Delta P\right|$ then value of C in (K/atm) is _____________.