-89.76% is the change from 781 to 80
Calculation steps:
[( 80 - 781 ) ÷ 781] x 100 = -89.76%
Formula
Percentage change = [(80 - 781) / 781] x 100
Subtract the new number by the original number
80 - 781 = -701
-701 ÷ 781 = -0.8975672215108835
-0.8975672215108835 x 100 = -89.76%