-50.15% is the change from 987 to 492
Calculation steps:
[( 492 - 987 ) ÷ 987] x 100 = -50.15%
Formula
Percentage change = [(492 - 987) / 987] x 100
Subtract the new number by the original number
492 - 987 = -495
-495 ÷ 987 = -0.5015197568389058
-0.5015197568389058 x 100 = -50.15%