-10.68% is the change from 871 to 778
Calculation steps:
[( 778 - 871 ) ÷ 871] x 100 = -10.68%
Formula
Percentage change = [(778 - 871) / 871] x 100
Subtract the new number by the original number
778 - 871 = -93
-93 ÷ 871 = -0.10677382319173363
-0.10677382319173363 x 100 = -10.68%