-91.04% is the change from 871 to 78
Calculation steps:
[( 78 - 871 ) ÷ 871] x 100 = -91.04%
Formula
Percentage change = [(78 - 871) / 871] x 100
Subtract the new number by the original number
78 - 871 = -793
-793 ÷ 871 = -0.9104477611940298
-0.9104477611940298 x 100 = -91.04%