-85.71% is the change from 28 to 4
Calculation steps:
[( 4 - 28 ) ÷ 28] x 100 = -85.71%
Formula
Percentage change = [(4 - 28) / 28] x 100
Subtract the new number by the original number
4 - 28 = -24
-24 ÷ 28 = -0.8571428571428571
-0.8571428571428571 x 100 = -85.71%