6.25% is the change from 128 to 136
Calculation steps:
[( 136 - 128 ) ÷ 128] x 100 = 6.25%
Formula
Percentage change = [(136 - 128) / 128] x 100
Subtract the new number by the original number
136 - 128 = 8
8 ÷ 128 = 0.0625
0.0625 x 100 = 6.25%
Example