This one happens a lot in the tech world:

After declining for months, we tried a new tactic to increase ROI.

Ugh.

First of all, what have “we” been “declining” in? Has our health declined? Our finances?  We don’t know.

We tried a new tactic for increasing ROI after it had been declining for months.

Oh, it’s the ROI that was declining, not us! Whew.