src.totals.js

// ./src/Totals.js
import Total from "./Total";
import round from "./round";
...
return (
    <div>
      <Total title={"Ending Value (USD)"} value={`$${round(endTotal, 2)}`} />
      <Total title={"Amount of Coin (BTC)"} value={round(totalCoinAmount, 5)} />
      <Total
        title={"Amount Invested (USD)"}
        value={`$${round(totalInvested, 2)}`}
      />
      <Total title={"Gained (USD)"} value={`$${round(numberGained, 2)}`} />
      <Total title={"Gained (%)"} value={`${round(percentGained, 2)}%`} />
    </div>
  );
...