-96.43% is the change from 28 to 1
Calculation steps:
[( 1 - 28 ) ÷ 28] x 100 = -96.43%
Formula
Percentage change = [(1 - 28) / 28] x 100
Subtract the new number by the original number
1 - 28 = -27
-27 ÷ 28 = -0.9642857142857143
-0.9642857142857143 x 100 = -96.43%