-28.4% is the change from 486 to 348
Calculation steps:
[( 348 - 486 ) ÷ 486] x 100 = -28.4%
Formula
Percentage change = [(348 - 486) / 486] x 100
Subtract the new number by the original number
348 - 486 = -138
-138 ÷ 486 = -0.2839506172839506
-0.2839506172839506 x 100 = -28.4%