-91.36% is the change from 486 to 42
Calculation steps:
[( 42 - 486 ) ÷ 486] x 100 = -91.36%
Formula
Percentage change = [(42 - 486) / 486] x 100
Subtract the new number by the original number
42 - 486 = -444
-444 ÷ 486 = -0.9135802469135802
-0.9135802469135802 x 100 = -91.36%