-88% is the change from 400 to 48
Calculation steps:
[( 48 - 400 ) ÷ 400] x 100 = -88%
Formula
Percentage change = [(48 - 400) / 400] x 100
Subtract the new number by the original number
48 - 400 = -352
-352 ÷ 400 = -0.88
-0.88 x 100 = -88%
Example