128.24% is the change from 170 to 388
Calculation steps:
[( 388 - 170 ) ÷ 170] x 100 = 128.24%
Formula
Percentage change = [(388 - 170) / 170] x 100
Subtract the new number by the original number
388 - 170 = 218
218 ÷ 170 = 1.2823529411764707
1.2823529411764707 x 100 = 128.24%