-87.12% is the change from 699 to 90
Calculation steps:
[( 90 - 699 ) ÷ 699] x 100 = -87.12%
Formula
Percentage change = [(90 - 699) / 699] x 100
Subtract the new number by the original number
90 - 699 = -609
-609 ÷ 699 = -0.871244635193133
-0.871244635193133 x 100 = -87.12%