-50.15% is the change from 983 to 490
Calculation steps:
[( 490 - 983 ) ÷ 983] x 100 = -50.15%
Formula
Percentage change = [(490 - 983) / 983] x 100
Subtract the new number by the original number
490 - 983 = -493
-493 ÷ 983 = -0.5015259409969481
-0.5015259409969481 x 100 = -50.15%