101.26% is the change from 318 to 640
Calculation steps:
[( 640 - 318 ) ÷ 318] x 100 = 101.26%
Formula
Percentage change = [(640 - 318) / 318] x 100
Subtract the new number by the original number
640 - 318 = 322
322 ÷ 318 = 1.0125786163522013
1.0125786163522013 x 100 = 101.26%