397.06% is the change from 170 to 845
Calculation steps:
[( 845 - 170 ) ÷ 170] x 100 = 397.06%
Formula
Percentage change = [(845 - 170) / 170] x 100
Subtract the new number by the original number
845 - 170 = 675
675 ÷ 170 = 3.9705882352941178
3.9705882352941178 x 100 = 397.06%