57.7% is the change from 409 to 645
Calculation steps:
[( 645 - 409 ) ÷ 409] x 100 = 57.7%
Formula
Percentage change = [(645 - 409) / 409] x 100
Subtract the new number by the original number
645 - 409 = 236
236 ÷ 409 = 0.5770171149144254
0.5770171149144254 x 100 = 57.7%