433.06% is the change from 121 to 645
Calculation steps:
[( 645 - 121 ) ÷ 121] x 100 = 433.06%
Formula
Percentage change = [(645 - 121) / 121] x 100
Subtract the new number by the original number
645 - 121 = 524
524 ÷ 121 = 4.330578512396694
4.330578512396694 x 100 = 433.06%