-44.08% is the change from 549 to 307
Calculation steps:
[( 307 - 549 ) ÷ 549] x 100 = -44.08%
Formula
Percentage change = [(307 - 549) / 549] x 100
Subtract the new number by the original number
307 - 549 = -242
-242 ÷ 549 = -0.4408014571948998
-0.4408014571948998 x 100 = -44.08%