127.65% is the change from 170 to 387
Calculation steps:
[( 387 - 170 ) ÷ 170] x 100 = 127.65%
Formula
Percentage change = [(387 - 170) / 170] x 100
Subtract the new number by the original number
387 - 170 = 217
217 ÷ 170 = 1.276470588235294
1.276470588235294 x 100 = 127.65%