-42.57% is the change from 956 to 549
Calculation steps:
[( 549 - 956 ) ÷ 956] x 100 = -42.57%
Formula
Percentage change = [(549 - 956) / 956] x 100
Subtract the new number by the original number
549 - 956 = -407
-407 ÷ 956 = -0.42573221757322177
-0.42573221757322177 x 100 = -42.57%