-8.74% is the change from 870 to 794
Calculation steps:
[( 794 - 870 ) ÷ 870] x 100 = -8.74%
Formula
Percentage change = [(794 - 870) / 870] x 100
Subtract the new number by the original number
794 - 870 = -76
-76 ÷ 870 = -0.08735632183908046
-0.08735632183908046 x 100 = -8.74%