-50.1% is the change from 984 to 491
Calculation steps:
[( 491 - 984 ) ÷ 984] x 100 = -50.1%
Formula
Percentage change = [(491 - 984) / 984] x 100
Subtract the new number by the original number
491 - 984 = -493
-493 ÷ 984 = -0.5010162601626016
-0.5010162601626016 x 100 = -50.1%