Calculates the percentage change between an initial and a final value, returned as a decimal.
The starting value.
The ending value.
The percentage change as a decimal (e.g., 0.2 for 20%, -0.25 for -25%).
If the initial value is zero (to avoid division by zero).
percentageChange(100, 120); // returns 0.2percentageChange(200, 150); // returns -0.25 Copy
percentageChange(100, 120); // returns 0.2percentageChange(200, 150); // returns -0.25
Calculates the percentage change between an initial and a final value, returned as a decimal.