-93.83% is the change from 486 to 30
Calculation steps:
[( 30 - 486 ) ÷ 486] x 100 = -93.83%
Formula
Percentage change = [(30 - 486) / 486] x 100
Subtract the new number by the original number
30 - 486 = -456
-456 ÷ 486 = -0.9382716049382716
-0.9382716049382716 x 100 = -93.83%