-6.37% is the change from 487 to 456
Calculation steps:
[( 456 - 487 ) ÷ 487] x 100 = -6.37%
Formula
Percentage change = [(456 - 487) / 487] x 100
Subtract the new number by the original number
456 - 487 = -31
-31 ÷ 487 = -0.06365503080082136
-0.06365503080082136 x 100 = -6.37%