109.4% is the change from 149 to 312
Calculation steps:
[( 312 - 149 ) ÷ 149] x 100 = 109.4%
Formula
Percentage change = [(312 - 149) / 149] x 100
Subtract the new number by the original number
312 - 149 = 163
163 ÷ 149 = 1.0939597315436242
1.0939597315436242 x 100 = 109.4%