Destruction bonuses

Bonuses are paid at 25%, 50%, 75%, and 95% destroyed, on top of per-block coins. The description does not say whether 100% pays another bonus, and it does not print the coin value of any mark.

Destroy enough of the current map to cross 25%, 50%, 75%, or 95%.

Stay on the map until you cross the next mark if you want that bonus. The per-block coins are already earned either way. If the on-screen percent does not match these four marks, trust the game UI over this list.