-6.17% is the change from 486 to 456
Calculation steps:
[( 456 - 486 ) ÷ 486] x 100 = -6.17%
Formula
Percentage change = [(456 - 486) / 486] x 100
Subtract the new number by the original number
456 - 486 = -30
-30 ÷ 486 = -0.06172839506172839
-0.06172839506172839 x 100 = -6.17%