-51.01% is the change from 992 to 486
Calculation steps:
[( 486 - 992 ) ÷ 992] x 100 = -51.01%
Formula
Percentage change = [(486 - 992) / 992] x 100
Subtract the new number by the original number
486 - 992 = -506
-506 ÷ 992 = -0.5100806451612904
-0.5100806451612904 x 100 = -51.01%