-50.35% is the change from 987 to 490
Calculation steps:
[( 490 - 987 ) ÷ 987] x 100 = -50.35%
Formula
Percentage change = [(490 - 987) / 987] x 100
Subtract the new number by the original number
490 - 987 = -497
-497 ÷ 987 = -0.5035460992907801
-0.5035460992907801 x 100 = -50.35%