-1.7% is the change from 587 to 577
Calculation steps:
[( 577 - 587 ) ÷ 587] x 100 = -1.7%
Formula
Percentage change = [(577 - 587) / 587] x 100
Subtract the new number by the original number
577 - 587 = -10
-10 ÷ 587 = -0.017035775127768313
-0.017035775127768313 x 100 = -1.7%