-97.54% is the change from 487 to 12
Calculation steps:
[( 12 - 487 ) ÷ 487] x 100 = -97.54%
Formula
Percentage change = [(12 - 487) / 487] x 100
Subtract the new number by the original number
12 - 487 = -475
-475 ÷ 487 = -0.9753593429158111
-0.9753593429158111 x 100 = -97.54%