300.62% is the change from 161 to 645
Calculation steps:
[( 645 - 161 ) ÷ 161] x 100 = 300.62%
Formula
Percentage change = [(645 - 161) / 161] x 100
Subtract the new number by the original number
645 - 161 = 484
484 ÷ 161 = 3.0062111801242235
3.0062111801242235 x 100 = 300.62%