-73.95% is the change from 549 to 143
Calculation steps:
[( 143 - 549 ) ÷ 549] x 100 = -73.95%
Formula
Percentage change = [(143 - 549) / 549] x 100
Subtract the new number by the original number
143 - 549 = -406
-406 ÷ 549 = -0.7395264116575592
-0.7395264116575592 x 100 = -73.95%