-42.39% is the change from 486 to 280
Calculation steps:
[( 280 - 486 ) ÷ 486] x 100 = -42.39%
Formula
Percentage change = [(280 - 486) / 486] x 100
Subtract the new number by the original number
280 - 486 = -206
-206 ÷ 486 = -0.42386831275720166
-0.42386831275720166 x 100 = -42.39%