-76.88% is the change from 346 to 80
Calculation steps:
[( 80 - 346 ) ÷ 346] x 100 = -76.88%
Formula
Percentage change = [(80 - 346) / 346] x 100
Subtract the new number by the original number
80 - 346 = -266
-266 ÷ 346 = -0.7687861271676301
-0.7687861271676301 x 100 = -76.88%