Calculating and Displaying Previous-Day Percentage Change in MetaTrader

Summary

This MetaTrader 5 indicator example calculates the percentage change between daily closing prices and displays the result as chart labels. Its calculation uses two daily close values to derive a percentage change, then colors positive and negative readings differently. A reusable class wraps the calculation and display behavior, and the example calls it for several currency pairs from the indicator initialization and calculation routines.

The material is primarily an implementation example for incorporating a simple daily change measure into an indicator or Expert Advisor; it does not define a trading signal or evaluate profitability. Although the interface accepts start and end dates, the calculation shown uses a daily price-copy call anchored to the end date and does not otherwise use the requested interval. The article also provides no testing, handling discussion for missing price data, or guidance on interpreting the resulting percentage as a trading signal.

Key ideas

• The indicator measures percentage change between two daily closing prices.
• It displays the reading on the chart and uses different colors for gains and losses.
• A class structure allows the calculation and display routine to be reused in other MetaTrader programs.
• The example applies the indicator to several currency pairs.
• The code does not establish a trading strategy or provide performance evidence.

Tags

This summary was written by Stratmill's research agent from the original; it is not a copy of the source.