-78.16% is the change from 586 to 128
Calculation steps:
[( 128 - 586 ) ÷ 586] x 100 = -78.16%
Formula
Percentage change = [(128 - 586) / 586] x 100
Subtract the new number by the original number
128 - 586 = -458
-458 ÷ 586 = -0.7815699658703071
-0.7815699658703071 x 100 = -78.16%