18.48% is the change from 487 to 577
Calculation steps:
[( 577 - 487 ) ÷ 487] x 100 = 18.48%
Formula
Percentage change = [(577 - 487) / 487] x 100
Subtract the new number by the original number
577 - 487 = 90
90 ÷ 487 = 0.18480492813141683
0.18480492813141683 x 100 = 18.48%