507.35% is the change from 136 to 826
Calculation steps:
[( 826 - 136 ) ÷ 136] x 100 = 507.35%
Formula
Percentage change = [(826 - 136) / 136] x 100
Subtract the new number by the original number
826 - 136 = 690
690 ÷ 136 = 5.073529411764706
5.073529411764706 x 100 = 507.35%