-43.2% is the change from 949 to 539
Calculation steps:
[( 539 - 949 ) ÷ 949] x 100 = -43.2%
Formula
Percentage change = [(539 - 949) / 949] x 100
Subtract the new number by the original number
539 - 949 = -410
-410 ÷ 949 = -0.4320337197049526
-0.4320337197049526 x 100 = -43.2%