1592.31% is the change from 39 to 660
Calculation steps:
[( 660 - 39 ) ÷ 39] x 100 = 1592.31%
Formula
Percentage change = [(660 - 39) / 39] x 100
Subtract the new number by the original number
660 - 39 = 621
621 ÷ 39 = 15.923076923076923
15.923076923076923 x 100 = 1592.31%