Question

Does anyone know how to do reverse percentages?

Answer 1

Move the decimal 2 places to the left.

Answer 2

First, calculate the reduction of the price
reduction = normal price - sale price
reduction = 57 - 41.6
reduction = 15.4
The price decreased £15.4

Second, change the reduction of the price into percentage
percent = reduction/normal price × 100%
$percent= \frac{15.4}{57}\times100$%
$percent= \frac{15.4\times100}{57}$%
$percent= \frac{1540}{57}$%
percent = 27.01%

The percentage reduction is 27.01% or approximately 27%