-49.6% is the change from 996 to 502
Calculation steps:
[( 502 - 996 ) ÷ 996] x 100 = -49.6%
Formula
Percentage change = [(502 - 996) / 996] x 100
Subtract the new number by the original number
502 - 996 = -494
-494 ÷ 996 = -0.4959839357429719
-0.4959839357429719 x 100 = -49.6%