Function total_return 

pub fn total_return(equity: &[Decimal]) -> Result<Decimal, MetricsError>

Calculate total return as a percentage.

Formula: (end - start) / start * 100

Arguments

• equity - Equity curve (NAV or portfolio value over time)

Returns

Total percentage return, or error if insufficient data.

Example

use quant_metrics::total_return;
use rust_decimal_macros::dec;

let equity = vec![dec!(10000), dec!(10500)];
assert_eq!(total_return(&equity).unwrap(), dec!(5)); // 5%