6346.15% is the change from 13 to 838
Calculation steps:
[( 838 - 13 ) ÷ 13] x 100 = 6346.15%
Formula
Percentage change = [(838 - 13) / 13] x 100
Subtract the new number by the original number
838 - 13 = 825
825 ÷ 13 = 63.46153846153846
63.46153846153846 x 100 = 6346.15%