147.65% is the change from 170 to 421
Calculation steps:
[( 421 - 170 ) ÷ 170] x 100 = 147.65%
Formula
Percentage change = [(421 - 170) / 170] x 100
Subtract the new number by the original number
421 - 170 = 251
251 ÷ 170 = 1.4764705882352942
1.4764705882352942 x 100 = 147.65%