Percentage Share (Table / Bar DI)

Percentage = (Part / Whole) × 100

When asked what share a row or bar holds in the overall total — identify the correct 'whole' from headers first.

Bar Chart Visual Ratio

Ratio = Height of Bar A : Height of Bar B (no absolute values needed)

For ratio or comparison questions from bar charts; read relative heights visually and avoid computing absolute figures when both bars share the same scale.

Pie Chart Sector Value

Sector Value = (Angle / 360) × Total | Percentage = Angle / 3.6

Convert a pie sector's angle to an absolute value or a percentage; compute the total once and reuse it for every question in the set.

Percentage Change (Line Graph DI)

% Change = ((New − Old) / Old) × 100

For trend or growth-rate questions on line graphs; check the sign first — a negative result means decrease, which immediately eliminates any option greater than the original value.

Caselet — Extract & Label

Convert text → table: rows = entities, columns = attributes; mark given vs. computed values

Before solving any paragraph-based DI set; writing out the extracted numbers as a mini-table prevents misreads and saves time across all sub-questions.