-88.5% is the change from 487 to 56
Calculation steps:
[( 56 - 487 ) ÷ 487] x 100 = -88.5%
Formula
Percentage change = [(56 - 487) / 487] x 100
Subtract the new number by the original number
56 - 487 = -431
-431 ÷ 487 = -0.8850102669404517
-0.8850102669404517 x 100 = -88.5%