128% is the change from 75 to 171
Calculation steps:
[( 171 - 75 ) ÷ 75] x 100 = 128%
Formula
Percentage change = [(171 - 75) / 75] x 100
Subtract the new number by the original number
171 - 75 = 96
96 ÷ 75 = 1.28
1.28 x 100 = 128%
Example