101.89% is the change from 317 to 640
Calculation steps:
[( 640 - 317 ) ÷ 317] x 100 = 101.89%
Formula
Percentage change = [(640 - 317) / 317] x 100
Subtract the new number by the original number
640 - 317 = 323
323 ÷ 317 = 1.0189274447949528
1.0189274447949528 x 100 = 101.89%