44.44% is the change from 639 to 923
Calculation steps:
[( 923 - 639 ) ÷ 639] x 100 = 44.44%
Formula
Percentage change = [(923 - 639) / 639] x 100
Subtract the new number by the original number
923 - 639 = 284
284 ÷ 639 = 0.4444444444444444
0.4444444444444444 x 100 = 44.44%