-80.44% is the change from 409 to 80
Calculation steps:
[( 80 - 409 ) ÷ 409] x 100 = -80.44%
Formula
Percentage change = [(80 - 409) / 409] x 100
Subtract the new number by the original number
80 - 409 = -329
-329 ÷ 409 = -0.80440097799511
-0.80440097799511 x 100 = -80.44%