-11.93% is the change from 486 to 428
Calculation steps:
[( 428 - 486 ) ÷ 486] x 100 = -11.93%
Formula
Percentage change = [(428 - 486) / 486] x 100
Subtract the new number by the original number
428 - 486 = -58
-58 ÷ 486 = -0.11934156378600823
-0.11934156378600823 x 100 = -11.93%