200% is the change from 155 to 465
Calculation steps:
[( 465 - 155 ) ÷ 155] x 100 = 200%
Formula
Percentage change = [(465 - 155) / 155] x 100
Subtract the new number by the original number
465 - 155 = 310
310 ÷ 155 = 2
2 x 100 = 200%
Example