100.65% is the change from 155 to 311
Calculation steps:
[( 311 - 155 ) ÷ 155] x 100 = 100.65%
Formula
Percentage change = [(311 - 155) / 155] x 100
Subtract the new number by the original number
311 - 155 = 156
156 ÷ 155 = 1.0064516129032257
1.0064516129032257 x 100 = 100.65%