-90.13% is the change from 780 to 77
Calculation steps:
[( 77 - 780 ) ÷ 780] x 100 = -90.13%
Formula
Percentage change = [(77 - 780) / 780] x 100
Subtract the new number by the original number
77 - 780 = -703
-703 ÷ 780 = -0.9012820512820513
-0.9012820512820513 x 100 = -90.13%