-68.6% is the change from 847 to 266
Calculation steps:
[( 266 - 847 ) ÷ 847] x 100 = -68.6%
Formula
Percentage change = [(266 - 847) / 847] x 100
Subtract the new number by the original number
266 - 847 = -581
-581 ÷ 847 = -0.6859504132231405
-0.6859504132231405 x 100 = -68.6%