Pie Chart DI

Master Pie Charts. Learn Degree to Percentage conversion, Double Pie logic, and Missing Data analysis.

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Model 1: Degree to Percentage Conversion

The Core Rule: A full circle is 360° and also 100%.
Conversion Logic:
100% = 360°
10% = 36°
1% = 3.6°
Formula:
Value in % = (Value in Degrees / 360) × 100
Value in Degrees = (Value in % / 100) × 360

Example:

Q: Convert 72° into percentage.

Solution: (72 / 360) × 100 = (1/5) × 100 = 20%.

Scenario: Two pie charts are given. One for Total Population, another for Female Population.
The Logic: You need to find Male Population.
Strategy:
Males = Total(Sector) - Females(Sector).
Calculate real values first, then subtract. Do not subtract percentages directly unless Base values are same (rare).

Example:

Q: Total=1000 (A=20%), Females=400 (A=30%). Find Males in A.

Solution: Total A = 20% of 1000 = 200. Female A = 30% of 400 = 120. Male A = 200 - 120 = 80.

Scenario: One sector in the pie chart is blank or labeled 'Others'.
The Logic: The sum of all sectors must be 100% (or 360°).
Hack:
Missing % = 100% - (Sum of known %).
Missing Degee = 360° - (Sum of known °).

Example:

Q: Pie: A=40%, B=35%, C=?. Find C.

Solution: C = 100% - (40+35)% = 100% - 75% = 25%.

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