-69.23% is the change from 260 to 80
Calculation steps:
[( 80 - 260 ) ÷ 260] x 100 = -69.23%
Formula
Percentage change = [(80 - 260) / 260] x 100
Subtract the new number by the original number
80 - 260 = -180
-180 ÷ 260 = -0.6923076923076923
-0.6923076923076923 x 100 = -69.23%