-97.74% is the change from 487 to 11
Calculation steps:
[( 11 - 487 ) ÷ 487] x 100 = -97.74%
Formula
Percentage change = [(11 - 487) / 487] x 100
Subtract the new number by the original number
11 - 487 = -476
-476 ÷ 487 = -0.9774127310061602
-0.9774127310061602 x 100 = -97.74%