Solution:
1. Let the total value of outstanding tuition fee loans in 2010/11 be V_{2010/11} and in 2012/13 be V_{2012/13}.
2. The percentage change formula is given by:
\text{Percentage Change} = \frac{V_{2012/13} - V_{2010/11}}{V_{2010/11}} \times 100\%
3. Substitute the provided or known values into the formula if available.
* Note: As specific numerical values for 2010/11 and 2012/13 are not provided, numbers need to be inputted to complete this calculation.