-86.19% is the change from 840 to 116
Calculation steps:
[( 116 - 840 ) ÷ 840] x 100 = -86.19%
Formula
Percentage change = [(116 - 840) / 840] x 100
Subtract the new number by the original number
116 - 840 = -724
-724 ÷ 840 = -0.861904761904762
-0.861904761904762 x 100 = -86.19%