When values are negative, Change % is empty

From GS

If the start/last value is negative, the change % isn't calculated, presumably because of the inaccurate negative (or positive if the change is also negative) result.

However, this could be easily overcome by dividing by the absolute of the start/last figure.

So, if the start/last figure is -45.00 and the change is 90.00 this would result in a change % of 200.0. Similarly, -45.00 with a change of -90.00 would give a change % of -200.0.