-8.15% is the change from 847 to 778
Calculation steps:
[( 778 - 847 ) ÷ 847] x 100 = -8.15%
Formula
Percentage change = [(778 - 847) / 847] x 100
Subtract the new number by the original number
778 - 847 = -69
-69 ÷ 847 = -0.08146399055489964
-0.08146399055489964 x 100 = -8.15%