-98.14% is the change from 485 to 9
Calculation steps:
[( 9 - 485 ) ÷ 485] x 100 = -98.14%
Formula
Percentage change = [(9 - 485) / 485] x 100
Subtract the new number by the original number
9 - 485 = -476
-476 ÷ 485 = -0.9814432989690721
-0.9814432989690721 x 100 = -98.14%