105.47% is the change from 311 to 639
Calculation steps:
[( 639 - 311 ) ÷ 311] x 100 = 105.47%
Formula
Percentage change = [(639 - 311) / 311] x 100
Subtract the new number by the original number
639 - 311 = 328
328 ÷ 311 = 1.0546623794212218
1.0546623794212218 x 100 = 105.47%