6138.46% is the change from 13 to 811
Calculation steps:
[( 811 - 13 ) ÷ 13] x 100 = 6138.46%
Formula
Percentage change = [(811 - 13) / 13] x 100
Subtract the new number by the original number
811 - 13 = 798
798 ÷ 13 = 61.38461538461539
61.38461538461539 x 100 = 6138.46%