6415.38% is the change from 13 to 847
Calculation steps:
[( 847 - 13 ) ÷ 13] x 100 = 6415.38%
Formula
Percentage change = [(847 - 13) / 13] x 100
Subtract the new number by the original number
847 - 13 = 834
834 ÷ 13 = 64.15384615384616
64.15384615384616 x 100 = 6415.38%