-85.43% is the change from 549 to 80
Calculation steps:
[( 80 - 549 ) ÷ 549] x 100 = -85.43%
Formula
Percentage change = [(80 - 549) / 549] x 100
Subtract the new number by the original number
80 - 549 = -469
-469 ÷ 549 = -0.8542805100182149
-0.8542805100182149 x 100 = -85.43%