-95.89% is the change from 487 to 20
Calculation steps:
[( 20 - 487 ) ÷ 487] x 100 = -95.89%
Formula
Percentage change = [(20 - 487) / 487] x 100
Subtract the new number by the original number
20 - 487 = -467
-467 ÷ 487 = -0.9589322381930184
-0.9589322381930184 x 100 = -95.89%