-49.2% is the change from 996 to 506
Calculation steps:
[( 506 - 996 ) ÷ 996] x 100 = -49.2%
Formula
Percentage change = [(506 - 996) / 996] x 100
Subtract the new number by the original number
506 - 996 = -490
-490 ÷ 996 = -0.4919678714859438
-0.4919678714859438 x 100 = -49.2%