46.79% is the change from 436 to 640
Calculation steps:
[( 640 - 436 ) ÷ 436] x 100 = 46.79%
Formula
Percentage change = [(640 - 436) / 436] x 100
Subtract the new number by the original number
640 - 436 = 204
204 ÷ 436 = 0.46788990825688076
0.46788990825688076 x 100 = 46.79%