-49.09% is the change from 994 to 506
Calculation steps:
[( 506 - 994 ) ÷ 994] x 100 = -49.09%
Formula
Percentage change = [(506 - 994) / 994] x 100
Subtract the new number by the original number
506 - 994 = -488
-488 ÷ 994 = -0.4909456740442656
-0.4909456740442656 x 100 = -49.09%