-3.47% is the change from 808 to 780
Calculation steps:
[( 780 - 808 ) ÷ 808] x 100 = -3.47%
Formula
Percentage change = [(780 - 808) / 808] x 100
Subtract the new number by the original number
780 - 808 = -28
-28 ÷ 808 = -0.034653465346534656
-0.034653465346534656 x 100 = -3.47%