-50.2% is the change from 992 to 494
Calculation steps:
[( 494 - 992 ) ÷ 992] x 100 = -50.2%
Formula
Percentage change = [(494 - 992) / 992] x 100
Subtract the new number by the original number
494 - 992 = -498
-498 ÷ 992 = -0.5020161290322581
-0.5020161290322581 x 100 = -50.2%