Bollinger Band Width % Change Histogram

📊 Bollinger Band Width % Change Histogram
This indicator visualizes the percentage change in Bollinger Band Width as a histogram. It helps traders identify volatility expansion or contraction in the market by tracking the change in Bollinger Band width over time.

🔍 How It Works:
Calculates standard Bollinger Bands (using configurable length and multiplier).

Measures the bandwidth as the difference between the upper and lower bands.

Computes the % of bandwidth relative to the SMA basis.

Then calculates the % change in bandwidth from the previous candle.

Plots this % change as a histogram:

Green bars indicate increasing volatility (bandwidth expansion).

Red bars indicate decreasing volatility (bandwidth contraction).

🛠️ Best Use Cases:
Detecting periods of volatility breakout or squeeze.

Confirming price action setups based on volatility behavior.

Can be paired with Bollinger Squeeze or momentum indicators for enhanced signals.

⚙️ Customizable Inputs:
Bollinger Length (default: 20)

Bollinger Multiplier (default: 2.0)