-42.63% is the change from 957 to 549
Calculation steps:
[( 549 - 957 ) ÷ 957] x 100 = -42.63%
Formula
Percentage change = [(549 - 957) / 957] x 100
Subtract the new number by the original number
549 - 957 = -408
-408 ÷ 957 = -0.4263322884012539
-0.4263322884012539 x 100 = -42.63%