110.2% is the change from 304 to 639
Calculation steps:
[( 639 - 304 ) ÷ 304] x 100 = 110.2%
Formula
Percentage change = [(639 - 304) / 304] x 100
Subtract the new number by the original number
639 - 304 = 335
335 ÷ 304 = 1.1019736842105263
1.1019736842105263 x 100 = 110.2%