Okun’s law says that a 1% increase in unemployment for one year is associated with a 2% decrease in GDP growth. Suppose an economy has the following expectations augmented Phillips curve:
\[
\pi = \pi^e - \beta (U - U^N), \quad \beta>0
\]
where \( \pi \) and \( \pi^e \) are the inflation and expected inflation rates, respectively. \( U \) and \( U^N \) are the unemployment and natural rate of unemployment, respectively. \( \beta \) measures sensitivity of inflation to unemployment gap. When \( \beta = 2 \), by what percentage does output fall short of full-employment given that the inflation rate, expected inflation rate, and natural rate of unemployment are 8%, 10%, and 6%, respectively?