-76.19% is the change from 336 to 80
Calculation steps:
[( 80 - 336 ) ÷ 336] x 100 = -76.19%
Formula
Percentage change = [(80 - 336) / 336] x 100
Subtract the new number by the original number
80 - 336 = -256
-256 ÷ 336 = -0.7619047619047619
-0.7619047619047619 x 100 = -76.19%