1728.57% is the change from 7 to 128
Calculation steps:
[( 128 - 7 ) ÷ 7] x 100 = 1728.57%
Formula
Percentage change = [(128 - 7) / 7] x 100
Subtract the new number by the original number
128 - 7 = 121
121 ÷ 7 = 17.285714285714285
17.285714285714285 x 100 = 1728.57%