Solution : https://service.sap.com/sap/support/notes/130995 (SAP Service marketplace login required)
Key words :
additional key words html layout alignment format ----- supportguide 20010215131121 -----reportwriter, sgrw_export_html sgrw_exportsgrw_om sgrw_ps sgrw_pc sgrw_sl sgrw_pca sgrw_ec sgrw_lis, html format, report writer report, layout settings, correctly aligned, decimal points, formatted correctly, decimal places, +/- sign display
Related Notes :
| 353455 | Composite note 'export/mailing' |
| 130105 | Report Writer:HTML download alignment is incorrect |