-96.29% is the change from 485 to 18
Calculation steps:
[( 18 - 485 ) ÷ 485] x 100 = -96.29%
Formula
Percentage change = [(18 - 485) / 485] x 100
Subtract the new number by the original number
18 - 485 = -467
-467 ÷ 485 = -0.9628865979381444
-0.9628865979381444 x 100 = -96.29%