-91.58% is the change from 950 to 80
Calculation steps:
[( 80 - 950 ) ÷ 950] x 100 = -91.58%
Formula
Percentage change = [(80 - 950) / 950] x 100
Subtract the new number by the original number
80 - 950 = -870
-870 ÷ 950 = -0.9157894736842105
-0.9157894736842105 x 100 = -91.58%