-11.75% is the change from 587 to 518
Calculation steps:
[( 518 - 587 ) ÷ 587] x 100 = -11.75%
Formula
Percentage change = [(518 - 587) / 587] x 100
Subtract the new number by the original number
518 - 587 = -69
-69 ÷ 587 = -0.11754684838160136
-0.11754684838160136 x 100 = -11.75%