-85.4% is the change from 548 to 80
Calculation steps:
[( 80 - 548 ) ÷ 548] x 100 = -85.4%
Formula
Percentage change = [(80 - 548) / 548] x 100
Subtract the new number by the original number
80 - 548 = -468
-468 ÷ 548 = -0.8540145985401459
-0.8540145985401459 x 100 = -85.4%