-41.03% is the change from 931 to 549
Calculation steps:
[( 549 - 931 ) ÷ 931] x 100 = -41.03%
Formula
Percentage change = [(549 - 931) / 931] x 100
Subtract the new number by the original number
549 - 931 = -382
-382 ÷ 931 = -0.4103114930182599
-0.4103114930182599 x 100 = -41.03%