305.88% is the change from 170 to 690
Calculation steps:
[( 690 - 170 ) ÷ 170] x 100 = 305.88%
Formula
Percentage change = [(690 - 170) / 170] x 100
Subtract the new number by the original number
690 - 170 = 520
520 ÷ 170 = 3.0588235294117645
3.0588235294117645 x 100 = 305.88%