-88.7% is the change from 805 to 91
Calculation steps:
[( 91 - 805 ) ÷ 805] x 100 = -88.7%
Formula
Percentage change = [(91 - 805) / 805] x 100
Subtract the new number by the original number
91 - 805 = -714
-714 ÷ 805 = -0.8869565217391304
-0.8869565217391304 x 100 = -88.7%