-49.6% is the change from 496 to 250
Calculation steps:
[( 250 - 496 ) ÷ 496] x 100 = -49.6%
Formula
Percentage change = [(250 - 496) / 496] x 100
Subtract the new number by the original number
250 - 496 = -246
-246 ÷ 496 = -0.4959677419354839
-0.4959677419354839 x 100 = -49.6%