I'm sure pretty much every accountant in the world got up and went to work that day exactly like they'd been doing all of their career. It probably didn't feel different for that many of them. Most of them had probably never used a computer then, and a lot of them probably didn't feel any particular need to, at least until they tried it. There were probably more than a few who were near the end of the career managed to keep doing their job the old way for another half or whole decade or so, because even when the future moves fast it's never evenly distributed.
There were probably also more than a few who saw VisiCalc and bought an Apple II to start doing their own books and ended up regretting it. I don't know where we are and how things will pan out, but I think there's a parallel.