-25.64% is the change from 780 to 580
Calculation steps:
[( 580 - 780 ) ÷ 780] x 100 = -25.64%
Formula
Percentage change = [(580 - 780) / 780] x 100
Subtract the new number by the original number
580 - 780 = -200
-200 ÷ 780 = -0.2564102564102564
-0.2564102564102564 x 100 = -25.64%