-49.9% is the change from 996 to 499
Calculation steps:
[( 499 - 996 ) ÷ 996] x 100 = -49.9%
Formula
Percentage change = [(499 - 996) / 996] x 100
Subtract the new number by the original number
499 - 996 = -497
-497 ÷ 996 = -0.49899598393574296
-0.49899598393574296 x 100 = -49.9%