400.59% is the change from 170 to 851
Calculation steps:
[( 851 - 170 ) ÷ 170] x 100 = 400.59%
Formula
Percentage change = [(851 - 170) / 170] x 100
Subtract the new number by the original number
851 - 170 = 681
681 ÷ 170 = 4.0058823529411764
4.0058823529411764 x 100 = 400.59%