128.57% is the change from 28 to 64
Calculation steps:
[( 64 - 28 ) ÷ 28] x 100 = 128.57%
Formula
Percentage change = [(64 - 28) / 28] x 100
Subtract the new number by the original number
64 - 28 = 36
36 ÷ 28 = 1.2857142857142858
1.2857142857142858 x 100 = 128.57%