140% is the change from 170 to 408
Calculation steps:
[( 408 - 170 ) ÷ 170] x 100 = 140%
Formula
Percentage change = [(408 - 170) / 170] x 100
Subtract the new number by the original number
408 - 170 = 238
238 ÷ 170 = 1.4
1.4 x 100 = 140%
Example