350% is the change from 136 to 612
Calculation steps:
[( 612 - 136 ) ÷ 136] x 100 = 350%
Formula
Percentage change = [(612 - 136) / 136] x 100
Subtract the new number by the original number
612 - 136 = 476
476 ÷ 136 = 3.5
3.5 x 100 = 350%
Example