-49.8% is the change from 992 to 498
Calculation steps:
[( 498 - 992 ) ÷ 992] x 100 = -49.8%
Formula
Percentage change = [(498 - 992) / 992] x 100
Subtract the new number by the original number
498 - 992 = -494
-494 ÷ 992 = -0.49798387096774194
-0.49798387096774194 x 100 = -49.8%