Updates are always made save file compatible, so even an old save should be fine.
I didn't have the problem when I loaded your save and entered the overview map. In both cases the variables of 25 and 200 were shown correctly.
If the problem is the second number in the row, like in "25 / 100" the 100, then the issue is with the image displaying the UI and not in the game. Maybe the "Overview map UI 1.rpgmvp" picture in your game files is not up to date? Is it possible you used the "update files only" to update your game, but may have missed an update at some point? Either way, a possible solution would be to make a fresh download of the full game files, and copy&paste the entire content of the www/save folder of the old game to the new game folder. This way you're certain to have all current game files, and you can continue your progress.