Sentence case vs title case

Small typographic decisions decide whether a table gets read or skipped, and four of them keep coming up.

Use sentence case by default for titles and headings. Title Case adds a capital every few words, which breaks the word shapes the eye uses for rapid recognition. ALL CAPS removes ascenders and descenders entirely, so a line of capitals is measurably slower to read. It also triggers the optical centring correction. Capitals are fine for a two-word label, a status stamp, a column header of three characters. They aren't a title style.

How should you format numbers in a table?

Figures come in two kinds, and both distinctions matter in a table. Lining figures all stand at cap height and are the default in most interface faces. Old-style figures have ascenders and descenders, and they read better inside running prose. Separately, tabular figures are all the same width, so digits stack in a column. Proportional figures are spaced individually, so a 1 is narrower than a 0. Set a number column in proportional figures and it won't align on the decimal, however carefully you set the paragraph. The fix is the font's tabular variant. A row of manual spaces won't do it. This all sounds fussy until you've looked at a column of figures that won't line up.

Then the column itself. Right-align numbers, always, to a common decimal place, and pad every cell to the width of the widest. Here's the India example's revenue column, in rupees crore for FY25:

The widest cell is seven characters, the four regions sum to 6,300.0, and the printed total is the sum. Nobody typed it in separately. That last point is really a numbers rule, but it belongs here because a formatted table is where totals get retyped.

How do you handle units and rounding?

Units go in the header, so "₹ cr" appears once and not in every cell. Percentages are the exception, where a mixed column would otherwise be ambiguous. Rounding needs a stated decision. Don't leave it to whatever the cell format did. The four regional shares of FY25 revenue are 38.37%, 30.25%, 20.39% and 11.00%. As printed they sum to 100.01%, even though before rounding they sum to 1.0. Either add the footnote saying shares may not sum to 100 because of rounding, or carry one more decimal. Saying nothing is the only wrong answer, because a reader who adds the column and gets 100.01 now doubts the rest of the slide. A footnote is a small price for keeping their trust.