264.71% is the change from 170 to 620
Calculation steps:
[( 620 - 170 ) ÷ 170] x 100 = 264.71%
Formula
Percentage change = [(620 - 170) / 170] x 100
Subtract the new number by the original number
620 - 170 = 450
450 ÷ 170 = 2.6470588235294117
2.6470588235294117 x 100 = 264.71%