When using compact number formatting (K, M, B) on chart axes, positive axis intervals are formatted correctly (e.g., 1.2K, 3.4M, 2.1B), but negative axis intervals display unformatted values (e.g., -1200, -3400000) inste…...xlsx", SaveFormat.XLSX); System.out.println("Simple...successfully: waterfall_chart.xlsx"); } catch (Exception e) { e...