290.91% is the change from 165 to 645
Calculation steps:
[( 645 - 165 ) ÷ 165] x 100 = 290.91%
Formula
Percentage change = [(645 - 165) / 165] x 100
Subtract the new number by the original number
645 - 165 = 480
480 ÷ 165 = 2.909090909090909
2.909090909090909 x 100 = 290.91%