107.74% is the change from 310 to 644
Calculation steps:
[( 644 - 310 ) ÷ 310] x 100 = 107.74%
Formula
Percentage change = [(644 - 310) / 310] x 100
Subtract the new number by the original number
644 - 310 = 334
334 ÷ 310 = 1.0774193548387097
1.0774193548387097 x 100 = 107.74%