1620.51% is the change from 39 to 671
Calculation steps:
[( 671 - 39 ) ÷ 39] x 100 = 1620.51%
Formula
Percentage change = [(671 - 39) / 39] x 100
Subtract the new number by the original number
671 - 39 = 632
632 ÷ 39 = 16.205128205128204
16.205128205128204 x 100 = 1620.51%