-26.58% is the change from 790 to 580
Calculation steps:
[( 580 - 790 ) ÷ 790] x 100 = -26.58%
Formula
Percentage change = [(580 - 790) / 790] x 100
Subtract the new number by the original number
580 - 790 = -210
-210 ÷ 790 = -0.26582278481012656
-0.26582278481012656 x 100 = -26.58%