500% is the change from 136 to 816
Calculation steps:
[( 816 - 136 ) ÷ 136] x 100 = 500%
Formula
Percentage change = [(816 - 136) / 136] x 100
Subtract the new number by the original number
816 - 136 = 680
680 ÷ 136 = 5
5 x 100 = 500%
Example