Definite Integration

Let \(f: \mathbb{R} \rightarrow \mathbb{R}\) be a differentiable function such that \(f^{\prime}(x)+f(x)=\int_\limits{0}^{2} f(t) d t\). If \(f(0)=e^{-2}\), then \(2 f(0)-f(2)\) is equal to ____________.