-50.05% is the change from 983 to 491
Calculation steps:
[( 491 - 983 ) ÷ 983] x 100 = -50.05%
Formula
Percentage change = [(491 - 983) / 983] x 100
Subtract the new number by the original number
491 - 983 = -492
-492 ÷ 983 = -0.5005086469989827
-0.5005086469989827 x 100 = -50.05%