-97.82% is the change from 780 to 17
Calculation steps:
[( 17 - 780 ) ÷ 780] x 100 = -97.82%
Formula
Percentage change = [(17 - 780) / 780] x 100
Subtract the new number by the original number
17 - 780 = -763
-763 ÷ 780 = -0.9782051282051282
-0.9782051282051282 x 100 = -97.82%