-11.49% is the change from 949 to 840
Calculation steps:
[( 840 - 949 ) ÷ 949] x 100 = -11.49%
Formula
Percentage change = [(840 - 949) / 949] x 100
Subtract the new number by the original number
840 - 949 = -109
-109 ÷ 949 = -0.1148577449947313
-0.1148577449947313 x 100 = -11.49%