-33.87% is the change from 877 to 580
Calculation steps:
[( 580 - 877 ) ÷ 877] x 100 = -33.87%
Formula
Percentage change = [(580 - 877) / 877] x 100
Subtract the new number by the original number
580 - 877 = -297
-297 ÷ 877 = -0.338654503990878
-0.338654503990878 x 100 = -33.87%