-88.45% is the change from 779 to 90
Calculation steps:
[( 90 - 779 ) ÷ 779] x 100 = -88.45%
Formula
Percentage change = [(90 - 779) / 779] x 100
Subtract the new number by the original number
90 - 779 = -689
-689 ÷ 779 = -0.8844672657252889
-0.8844672657252889 x 100 = -88.45%