$\begin{array}{l}\text{Here, given expression can be written}\\ \text{as}\\ \\ =\frac{7}{8}\times 1008-\frac{3}{4}\times 968\\ \\ =\text{7}\times \text{126}-\text{3}\times \text{242}\\ \\ \text{= 882}-\text{726}\\ \\ \text{= 156}\end{array}$

Hence, Option E is correct.