-75% is the change from 48 to 12
Calculation steps:
[( 12 - 48 ) ÷ 48] x 100 = -75%
Formula
Percentage change = [(12 - 48) / 48] x 100
Subtract the new number by the original number
12 - 48 = -36
-36 ÷ 48 = -0.75
-0.75 x 100 = -75%
Example