109.8% is the change from 153 to 321
Calculation steps:
[( 321 - 153 ) ÷ 153] x 100 = 109.8%
Formula
Percentage change = [(321 - 153) / 153] x 100
Subtract the new number by the original number
321 - 153 = 168
168 ÷ 153 = 1.0980392156862746
1.0980392156862746 x 100 = 109.8%