-97.89% is the change from 807 to 17
Calculation steps:
[( 17 - 807 ) ÷ 807] x 100 = -97.89%
Formula
Percentage change = [(17 - 807) / 807] x 100
Subtract the new number by the original number
17 - 807 = -790
-790 ÷ 807 = -0.9789343246592317
-0.9789343246592317 x 100 = -97.89%