Logic for Number Formatting Keyboard Shortcuts

At times keyboard shortcuts seem random, but there is logic behind them. Let's break an example down. To format a number as a currency the shortcut is CRTL + SHIFT + 4.

Both the SHIFT and 4 keys seem random, but they're intentionally used because SHIFT + 4 is the dollar sign ($). Therefore if we want to format as a currency, it's simply: CTRL + ‘$' (where the dollar sign is SHIFT + 4). The same is true for formatting a number as a percent.