-6.57% is the change from 487 to 455
Calculation steps:
[( 455 - 487 ) ÷ 487] x 100 = -6.57%
Formula
Percentage change = [(455 - 487) / 487] x 100
Subtract the new number by the original number
455 - 487 = -32
-32 ÷ 487 = -0.06570841889117043
-0.06570841889117043 x 100 = -6.57%