101.29% is the change from 155 to 312
Calculation steps:
[( 312 - 155 ) ÷ 155] x 100 = 101.29%
Formula
Percentage change = [(312 - 155) / 155] x 100
Subtract the new number by the original number
312 - 155 = 157
157 ÷ 155 = 1.0129032258064516
1.0129032258064516 x 100 = 101.29%