-84.67% is the change from 587 to 90
Calculation steps:
[( 90 - 587 ) ÷ 587] x 100 = -84.67%
Formula
Percentage change = [(90 - 587) / 587] x 100
Subtract the new number by the original number
90 - 587 = -497
-497 ÷ 587 = -0.8466780238500852
-0.8466780238500852 x 100 = -84.67%