I happened to take my first (and, so far, only) trip to India in January 2017. The aftereffects of this stunt were still being felt; as a tourist, I sometimes had trouble getting ahold of banknotes (you would still go from ATM to ATM hoping one would dispense some cash), and people were reluctant to take the "large" 2000 rupee notes, because they couldn't make change! It must have been even worse for locals, and when the process had started months earlier.