Question

¿el 20% de 2300 no es 460?,

Answer 1

100% --- 2300
20% ------ x
x = 20 × 2300 / 100
× = 460%

Answer 2

Asi es:
 2300 ----100%
    x    ---- 20%
$\frac{2300*20}{100} = \frac{46000}{100} =460$