-88.76% is the change from 587 to 66
Calculation steps:
[( 66 - 587 ) ÷ 587] x 100 = -88.76%
Formula
Percentage change = [(66 - 587) / 587] x 100
Subtract the new number by the original number
66 - 587 = -521
-521 ÷ 587 = -0.8875638841567292
-0.8875638841567292 x 100 = -88.76%