One of the best chart to explain reason for changes is the waterfall chart.
Type of analysis from one period to another to give some examples include
- Profitability explaining sales price and sales quantity variance, cost of sales variances, fixed costs components, etc.
- Sales revenue explaining quantity, prices, geographic, segmentation changes
- Fixed cost explaining main expenses components that contributed the most to the fluctuations
- Logistic cost explaining the quantity of shipments, cost per location, product types, etc.
- Variable manufacturing cost deliberating on specific consumption variance, material cost variance, efficiency variance, production volume variance, etc.
- Working capital movements highlighting accounts payable, accounts receivable and inventory movements with further insights into days outstanding.