Question

Formula for profit & loss%

Answer 1

$profit \: percentage \: = \frac{sp - cp}{cp} \times 100 \\ loss \: percntage \: \frac{cp - sp}{cp} \times 100$
hope it will help you.

Answer 2

profit% = (new price - old price/ original price )× 100
loss % = (old price - new price / original price) × 100