-13.49% is the change from 949 to 821
Calculation steps:
[( 821 - 949 ) ÷ 949] x 100 = -13.49%
Formula
Percentage change = [(821 - 949) / 949] x 100
Subtract the new number by the original number
821 - 949 = -128
-128 ÷ 949 = -0.13487881981032665
-0.13487881981032665 x 100 = -13.49%