-88.42% is the change from 777 to 90
Calculation steps:
[( 90 - 777 ) ÷ 777] x 100 = -88.42%
Formula
Percentage change = [(90 - 777) / 777] x 100
Subtract the new number by the original number
90 - 777 = -687
-687 ÷ 777 = -0.8841698841698842
-0.8841698841698842 x 100 = -88.42%