-50% is the change from 496 to 248
Calculation steps:
[( 248 - 496 ) ÷ 496] x 100 = -50%
Formula
Percentage change = [(248 - 496) / 496] x 100
Subtract the new number by the original number
248 - 496 = -248
-248 ÷ 496 = -0.5
-0.5 x 100 = -50%
Example