-97.91% is the change from 813 to 17
Calculation steps:
[( 17 - 813 ) ÷ 813] x 100 = -97.91%
Formula
Percentage change = [(17 - 813) / 813] x 100
Subtract the new number by the original number
17 - 813 = -796
-796 ÷ 813 = -0.9790897908979089
-0.9790897908979089 x 100 = -97.91%