43.66% is the change from 639 to 918
Calculation steps:
[( 918 - 639 ) ÷ 639] x 100 = 43.66%
Formula
Percentage change = [(918 - 639) / 639] x 100
Subtract the new number by the original number
918 - 639 = 279
279 ÷ 639 = 0.43661971830985913
0.43661971830985913 x 100 = 43.66%