115.15% is the change from 297 to 639
Calculation steps:
[( 639 - 297 ) ÷ 297] x 100 = 115.15%
Formula
Percentage change = [(639 - 297) / 297] x 100
Subtract the new number by the original number
639 - 297 = 342
342 ÷ 297 = 1.1515151515151516
1.1515151515151516 x 100 = 115.15%