-19.77% is the change from 971 to 779
Calculation steps:
[( 779 - 971 ) ÷ 971] x 100 = -19.77%
Formula
Percentage change = [(779 - 971) / 971] x 100
Subtract the new number by the original number
779 - 971 = -192
-192 ÷ 971 = -0.19773429454170957
-0.19773429454170957 x 100 = -19.77%