-42.57% is the change from 949 to 545
Calculation steps:
[( 545 - 949 ) ÷ 949] x 100 = -42.57%
Formula
Percentage change = [(545 - 949) / 949] x 100
Subtract the new number by the original number
545 - 949 = -404
-404 ÷ 949 = -0.42571127502634354
-0.42571127502634354 x 100 = -42.57%