-89.47% is the change from 760 to 80
Calculation steps:
[( 80 - 760 ) ÷ 760] x 100 = -89.47%
Formula
Percentage change = [(80 - 760) / 760] x 100
Subtract the new number by the original number
80 - 760 = -680
-680 ÷ 760 = -0.8947368421052632
-0.8947368421052632 x 100 = -89.47%