200% is the change from 136 to 408
Calculation steps:
[( 408 - 136 ) ÷ 136] x 100 = 200%
Formula
Percentage change = [(408 - 136) / 136] x 100
Subtract the new number by the original number
408 - 136 = 272
272 ÷ 136 = 2
2 x 100 = 200%
Example