-1.85% is the change from 487 to 478
Calculation steps:
[( 478 - 487 ) ÷ 487] x 100 = -1.85%
Formula
Percentage change = [(478 - 487) / 487] x 100
Subtract the new number by the original number
478 - 487 = -9
-9 ÷ 487 = -0.018480492813141684
-0.018480492813141684 x 100 = -1.85%