-43.35% is the change from 549 to 311
Calculation steps:
[( 311 - 549 ) ÷ 549] x 100 = -43.35%
Formula
Percentage change = [(311 - 549) / 549] x 100
Subtract the new number by the original number
311 - 549 = -238
-238 ÷ 549 = -0.4335154826958106
-0.4335154826958106 x 100 = -43.35%