-67.4% is the change from 859 to 280
Calculation steps:
[( 280 - 859 ) ÷ 859] x 100 = -67.4%
Formula
Percentage change = [(280 - 859) / 859] x 100
Subtract the new number by the original number
280 - 859 = -579
-579 ÷ 859 = -0.6740395809080326
-0.6740395809080326 x 100 = -67.4%