Otto Neurath's picture statistics as a film language: every quantity is a row of identical, flat pictograms you could count by hand. Dashboards stamp in like printed tokens, collapse into one Acme symbol, and the anomaly is shown the Isotype way — carts that simply go missing.
Pictograms stamp in row by row, left to right, one per 1/8 note; the coral one lands last on beat 4 of bar 3 and the big 38 hits the downbeat before the drop.
All 38 tokens slide down into the arrow and are replaced by the Acme mark on the drop; the wordmark types in under it, the legend line rules in from the left.
The before-row stamps in teal, then the after-row stamps 8 carts and a sliced ninth; the two dashed ghost carts fade in coral on the snare, −18% counts up, then the cursor clicks Roll back.
Seven builder figures stamp in, the dashed divider draws down, the watching mark pops; headline italic lands on the downbeat and Start free presses on the last bar.
Counting identical symbols is the most honest chart there is: viewers verify −18% with their eyes, which builds trust fast. Risk: too many tokens become texture — keep rows ≤ 10 and always show the legend.
Adapt to your product: Pick one countable unit your users care about (orders, builds, tickets, seats) and draw it as a flat 2-colour pictogram; let the anomaly be tokens that go missing or turn coral.
References: en.wikipedia.org/wiki/Isotype_(picture_language) (Neurath/Arntz principle: more quantity = more identical symbols, not bigger ones)