To find a multi-bagger stock, what are the underlying trends we should look for in a business? Ideally, a business will show two trends; firstly a growing return on capital employed (ROCE) and secondly, an increasing amount of capital employed. Ultimately, this demonstrates that it's a business that is reinvesting profits at increasing rates of return. Speaking of which, we noticed some great changes in Jyoti Structures Limited (NSE:JYOTISTRUC) returns on capital, so let's have a look.