1989.74% is the change from 39 to 815
Calculation steps:
[( 815 - 39 ) ÷ 39] x 100 = 1989.74%
Formula
Percentage change = [(815 - 39) / 39] x 100
Subtract the new number by the original number
815 - 39 = 776
776 ÷ 39 = 19.897435897435898
19.897435897435898 x 100 = 1989.74%