-46.15% is the change from 949 to 511
Calculation steps:
[( 511 - 949 ) ÷ 949] x 100 = -46.15%
Formula
Percentage change = [(511 - 949) / 949] x 100
Subtract the new number by the original number
511 - 949 = -438
-438 ÷ 949 = -0.46153846153846156
-0.46153846153846156 x 100 = -46.15%