-2.21% is the change from 949 to 928
Calculation steps:
[( 928 - 949 ) ÷ 949] x 100 = -2.21%
Formula
Percentage change = [(928 - 949) / 949] x 100
Subtract the new number by the original number
928 - 949 = -21
-21 ÷ 949 = -0.022128556375131718
-0.022128556375131718 x 100 = -2.21%