-82.18% is the change from 449 to 80
Calculation steps:
[( 80 - 449 ) ÷ 449] x 100 = -82.18%
Formula
Percentage change = [(80 - 449) / 449] x 100
Subtract the new number by the original number
80 - 449 = -369
-369 ÷ 449 = -0.821826280623608
-0.821826280623608 x 100 = -82.18%