13500% is the change from 6 to 816
Calculation steps:
[( 816 - 6 ) ÷ 6] x 100 = 13500%
Formula
Percentage change = [(816 - 6) / 6] x 100
Subtract the new number by the original number
816 - 6 = 810
810 ÷ 6 = 135
135 x 100 = 13500%
Example