-51.11% is the change from 994 to 486
Calculation steps:
[( 486 - 994 ) ÷ 994] x 100 = -51.11%
Formula
Percentage change = [(486 - 994) / 994] x 100
Subtract the new number by the original number
486 - 994 = -508
-508 ÷ 994 = -0.5110663983903421
-0.5110663983903421 x 100 = -51.11%