Waterfall infographic with matlab for data processing and visualization

Data visualization infographic titled "Waterfall Chart" using SANKEY FLOW as the dominant visual element to best show the breakdown, while preserving a subtle secondary time-context strip only if needed. Main graphic: a clean left-to-right waterfall-style breakdown of a total across sequential components with sharp labels, values, and connectors, rendered like a premium newspaper data graphic. Use realistic plausible illustrative numbers clearly marked as illustrative: starting total 100, then component changes "+22 Revenue growth", "-15 Discounts", "+8 Upsell", "-12 Returns", "-9 Operating costs", ending net total 94. Include a light baseline and step logic so the breakdown is immediately legible. All labels, axis text, legends, captions, and annotations must be in English. Add a compact horizontal value scale with clear tick marks in English, no misleading truncation, honest proportional scaling. Include 4 key insight callouts with small icons: "22" headline with text "Largest positive driver: revenue growth lifted the total most" and an upward arrow icon; "15" headline with text "Discounts were the biggest drag on performance" and a price-tag icon; "94" headline with text "Net ending value remained below the starting level" and a balance icon; "2" headline with text "Positive drivers nearly offset losses, but not fully" and a compare icon. Add a small source / data-note strip at the bottom reading "Data note: Illustrative example. Figures are illustrative and not sourced from an external dataset." Visual style: NYT graphics desk meets Economist warm beige palette, soft parchment background, muted sand and cream tones, dark charcoal typography, restrained red for negative flows, muted blue or teal for positive flows, subtle grid, refined editorial spacing, understated elegant mood. Ensure chart-first hierarchy, crisp tick marks, precise legends, compact annotations, editorial data journalism illustration, FT / Bloomberg-grade chart aesthetics, vector-clean infographic layout. All text MUST be written in English (array). Every heading, label, caption, legend and metric name in the image must be in English — not English. Spell each English word correctly using English characters and diacritics. Numbers stay as digits, no fake authoritative sources cited, no watermarks Numbers labeled "illustrative" unless the user supplied specific sourced data. No fake authoritative sources cited (do not invent "Source: Reuters 2025" — use "Illustrative example" instead). No misleading axis truncation or scale manipulation.