c$)$ Navana Company has a cost of capital of $8\%$ and is considering a project with the following 'most$-$likely' cash flows.

$\backslash$table$[[$Year$,$Purchase of plant,Running costs,Savings$],[$Tk$.,$Tk$.,$Tk$.,],[0,(7,000),2,000,6,000],[1,,2,500,7,000]]$

Required:

Measure the sensitivity $($in percentages$)$ of the project to changes in the levels of expected costs and savings.