Database Visualizer Waterfall Chart Infographic

Data visualization infographic titled "Waterfall Chart" using COMPARISON COLUMNS as the dominant visual metaphor to show contrast in a waterfall-style step progression, with sharp axis labels and tick marks in English. Central chart: a clean vertical waterfall sequence built from comparison columns with connectors, showing how a starting value changes through positive and negative components to reach an ending value. Use realistic illustrative numbers: "Starting value" 100, "Price increase" +35, "Discounts" -18, "Returns" -12, "Upsells" +22, "Fees" -9, "Ending value" 118. Y-axis label: "Value (illustrative units)" with clear ticks from 0 to 140 at 20-unit intervals. X-axis labels: "Starting value", "Price increase", "Discounts", "Returns", "Upsells", "Fees", "Ending value". Positive columns in varied rainbow categorical tones, negative columns in contrasting rainbow tones, start and end totals in darker anchor colors. Add subtle value labels above each column: "100", "+35", "-18", "-12", "+22", "-9", "118". Include thin connector lines between steps to preserve true waterfall logic, no truncated axis, no misleading scale manipulation. Add 4 insight callouts around the chart, each with a small icon, headline number, and short interpretation in English: 1) icon upward arrow, headline "118", text "Ending value finishes 18% above the start." 2) icon plus sign, headline "+35", text "Price increase is the single largest positive driver." 3) icon minus sign, headline "-30", text "Discounts and returns combine for the biggest drag." 4) icon balance scale, headline "+18", text "Gains outweigh losses, but only by a modest margin." Add a small side mini-legend in English: "Positive change", "Negative change", "Total". Include a compact source/data-note strip at the bottom: "Data note: Illustrative example. Values are fictional and shown for visual explanation only." Visual style: minimal flat, rainbow categorical palette, lots of white space, clean geometry, crisp typography, balanced spacing, high contrast for readability, calm analytical mood with a modern product-analytics feel. Include the phrase: 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.