-96.1% is the change from 487 to 19
Calculation steps:
[( 19 - 487 ) ÷ 487] x 100 = -96.1%
Formula
Percentage change = [(19 - 487) / 487] x 100
Subtract the new number by the original number
19 - 487 = -468
-468 ÷ 487 = -0.9609856262833676
-0.9609856262833676 x 100 = -96.1%