-6.16% is the change from 487 to 457
Calculation steps:
[( 457 - 487 ) ÷ 487] x 100 = -6.16%
Formula
Percentage change = [(457 - 487) / 487] x 100
Subtract the new number by the original number
457 - 487 = -30
-30 ÷ 487 = -0.061601642710472276
-0.061601642710472276 x 100 = -6.16%