44.06% is the change from 640 to 922
Calculation steps:
[( 922 - 640 ) ÷ 640] x 100 = 44.06%
Formula
Percentage change = [(922 - 640) / 640] x 100
Subtract the new number by the original number
922 - 640 = 282
282 ÷ 640 = 0.440625
0.440625 x 100 = 44.06%