During $2020,$ Coca$-$Cola's revenue fell by $11\mathrm{.}5\%.$ How much did it decline if the previous year's revenue was $$37\mathrm{.}3$ billion?

$$33\mathrm{.}0$ billion

$$5\mathrm{.}4$ billion

$$3\mathrm{.}4$ billion

$$41\mathrm{.}6$ billion

$$4\mathrm{.}3$ billion