45.16% is the change from 640 to 929
Calculation steps:
[( 929 - 640 ) ÷ 640] x 100 = 45.16%
Formula
Percentage change = [(929 - 640) / 640] x 100
Subtract the new number by the original number
929 - 640 = 289
289 ÷ 640 = 0.4515625
0.4515625 x 100 = 45.16%