-54.9% is the change from 949 to 428
Calculation steps:
[( 428 - 949 ) ÷ 949] x 100 = -54.9%
Formula
Percentage change = [(428 - 949) / 949] x 100
Subtract the new number by the original number
428 - 949 = -521
-521 ÷ 949 = -0.5489989462592202
-0.5489989462592202 x 100 = -54.9%