-49.7% is the change from 996 to 501
Calculation steps:
[( 501 - 996 ) ÷ 996] x 100 = -49.7%
Formula
Percentage change = [(501 - 996) / 996] x 100
Subtract the new number by the original number
501 - 996 = -495
-495 ÷ 996 = -0.49698795180722893
-0.49698795180722893 x 100 = -49.7%