-50.46% is the change from 987 to 489
Calculation steps:
[( 489 - 987 ) ÷ 987] x 100 = -50.46%
Formula
Percentage change = [(489 - 987) / 987] x 100
Subtract the new number by the original number
489 - 987 = -498
-498 ÷ 987 = -0.5045592705167173
-0.5045592705167173 x 100 = -50.46%