321.57% is the change from 153 to 645
Calculation steps:
[( 645 - 153 ) ÷ 153] x 100 = 321.57%
Formula
Percentage change = [(645 - 153) / 153] x 100
Subtract the new number by the original number
645 - 153 = 492
492 ÷ 153 = 3.215686274509804
3.215686274509804 x 100 = 321.57%