-2.27% is the change from 971 to 949
Calculation steps:
[( 949 - 971 ) ÷ 971] x 100 = -2.27%
Formula
Percentage change = [(949 - 971) / 971] x 100
Subtract the new number by the original number
949 - 971 = -22
-22 ÷ 971 = -0.02265705458290422
-0.02265705458290422 x 100 = -2.27%