-18.86% is the change from 949 to 770
Calculation steps:
[( 770 - 949 ) ÷ 949] x 100 = -18.86%
Formula
Percentage change = [(770 - 949) / 949] x 100
Subtract the new number by the original number
770 - 949 = -179
-179 ÷ 949 = -0.1886195995785037
-0.1886195995785037 x 100 = -18.86%