\documentclass{article}
\begin{document}
\begin{table}
\small
\centering
\begin{tabular}{c|cc}
Source & Variation up (Stat. up) \% & Variation down (Stat. down) \% \\ \hline 
MatrixElement-Top1L\_SR1LBin0 & 8.7905 & -8.7905 \\ 
MatrixElement-Top1L\_SR1LBin1 & 12.7318 & -12.7318 \\ 
MatrixElement-Top1L\_SR1LBin2 & 14.0782 & -14.0782 \\ 
MatrixElement-Top1L\_SR1LBin3 & 14.2377 & -14.2377 \\ 
MatrixElement-Top1L\_SR1LBin4 & 44.5542 & -44.5542 \\ 
MatrixElement-Top1L\_tW1L\_CRtt & 3.679 & -3.679 \\ 
MatrixElement-Top1L\_tW1L\_CRWm & 16.0431 & -16.0431 \\ 
MatrixElement-Top1L\_tW1L\_CRWm & 16.0431 & -16.0431 \\ 
MatrixElement-Top1L\_tW1L\_VRtt\_VR1 & 3.3447 & -3.3447 \\ 
MatrixElement-Top1L\_tW1L\_VRtt\_VR2 & 11.3957 & -11.3957 \\ 
MatrixElement-Top1L\_tW1L\_VRW\_VR1p & 1.2164 & -1.2164 \\ 
MatrixElement-Top1L\_tW1L\_VRW\_VR1m & 5.0152 & -5.0152 \\ 
MatrixElement-Top1L\_tW1L\_VRW\_VR2p & 16.1656 & -16.1656 \\ 
MatrixElement-Top1L\_tW1L\_VRW\_VR2m & 17.1628 & -17.1628 \\ 
PartonShower-Top1L\_SR1LBin0 & 16.6363 & -16.6363 \\ 
PartonShower-Top1L\_SR1LBin1 & 21.7482 & -21.7482 \\ 
PartonShower-Top1L\_SR1LBin2 & 31.8087 & -31.8087 \\ 
PartonShower-Top1L\_SR1LBin3 & 35.9366 & -35.9366 \\ 
PartonShower-Top1L\_SR1LBin4 & 41.3032 & -41.3032 \\ 
PartonShower-Top1L\_tW1L\_CRtt & 17.0942 & -17.0942 \\ 
PartonShower-Top1L\_tW1L\_CRWp & 9.4085 & -9.4085 \\ 
PartonShower-Top1L\_tW1L\_CRWm & 7.5861 & -7.5861 \\ 
PartonShower-Top1L\_tW1L\_VRtt\_VR1 & 16.1998 & -16.1998 \\ 
PartonShower-Top1L\_tW1L\_VRtt\_VR2 & 11.8456 & -11.8456 \\ 
PartonShower-Top1L\_tW1L\_VRW\_VR1p & 16.7074 & -16.7074 \\ 
PartonShower-Top1L\_tW1L\_VRW\_VR1m & 18.2149 & -18.2149 \\ 
PartonShower-Top1L\_tW1L\_VRW\_VR2p & 12.2905 & -12.2905 \\ 
PartonShower-Top1L\_tW1L\_VRW\_VR2m & 9.7356 & -9.7356 \\ 
FSR-Top1L\_SR1LBin0 & -0.7376 & -1.6468 \\ 
FSR-Top1L\_SR1LBin1 & -1.102 & -1.1166 \\ 
FSR-Top1L\_SR1LBin2 & -3.6282 & -10.1509 \\ 
FSR-Top1L\_SR1LBin3 & 6.6439 & -29.4076 \\ 
FSR-Top1L\_SR1LBin4 & 20.0153 & -3.3901 \\ 
FSR-Top1L\_tW1L\_CRtt & 4.8872 & -3.1396 \\ 
FSR-Top1L\_tW1L\_CRWp & 9.0201 & -4.2459 \\ 
FSR-Top1L\_tW1L\_CRWm & 6.9716 & -3.8267 \\ 
FSR-Top1L\_tW1L\_VRtt\_VR1 & 3.4277 & -1.7697 \\ 
FSR-Top1L\_tW1L\_VRtt\_VR2 & 8.0312 & -4.4154 \\ 
FSR-Top1L\_tW1L\_VRW\_VR1p & 3.0601 & -1.1204 \\ 
FSR-Top1L\_tW1L\_VRW\_VR1m & 1.7936 & -1.6085 \\ 
FSR-Top1L\_tW1L\_VRW\_VR2p & 3.6844 & -3.998 \\ 
FSR-Top1L\_tW1L\_VRW\_VR2m & 6.5156 & -3.7328 \\ 
ISR-Top1L\_SR1LBin0 & 17.8142 & -22.1922 \\ 
ISR-Top1L\_SR1LBin1 & 18.3767 & -23.3449 \\ 
ISR-Top1L\_SR1LBin2 & 21.3768 & -29.4389 \\ 
ISR-Top1L\_SR1LBin3 & 24.4321 & -36.4779 \\ 
ISR-Top1L\_SR1LBin4 & 29.512 & -48.5506 \\ 
ISR-Top1L\_tW1L\_CRtt & 15.4772 & -17.8993 \\ 
ISR-Top1L\_tW1L\_CRWp & 17.8272 & -22.9148 \\ 
ISR-Top1L\_tW1L\_CRWm & 18.1053 & -23.3348 \\ 
ISR-Top1L\_tW1L\_VRtt\_VR1 & 16.1265 & -19.4034 \\ 
ISR-Top1L\_tW1L\_VRtt\_VR2 & 18.2492 & -23.4146 \\ 
ISR-Top1L\_tW1L\_VRW\_VR1p & 11.0479 & -9.1652 \\ 
ISR-Top1L\_tW1L\_VRW\_VR1m & 11.0282 & -9.1302 \\ 
ISR-Top1L\_tW1L\_VRW\_VR2p & 20.3383 & -28.0157 \\ 
ISR-Top1L\_tW1L\_VRW\_VR2m & 20.5393 & -27.9169 \\ 
\end{tabular}
\end{table}
\end{document}
