-88.74% is the change from 808 to 91
Calculation steps:
[( 91 - 808 ) ÷ 808] x 100 = -88.74%
Formula
Percentage change = [(91 - 808) / 808] x 100
Subtract the new number by the original number
91 - 808 = -717
-717 ÷ 808 = -0.8873762376237624
-0.8873762376237624 x 100 = -88.74%