-51.52% is the change from 99 to 48
Calculation steps:
[( 48 - 99 ) ÷ 99] x 100 = -51.52%
Formula
Percentage change = [(48 - 99) / 99] x 100
Subtract the new number by the original number
48 - 99 = -51
-51 ÷ 99 = -0.5151515151515151
-0.5151515151515151 x 100 = -51.52%