103.16% is the change from 158 to 321
Calculation steps:
[( 321 - 158 ) ÷ 158] x 100 = 103.16%
Formula
Percentage change = [(321 - 158) / 158] x 100
Subtract the new number by the original number
321 - 158 = 163
163 ÷ 158 = 1.0316455696202531
1.0316455696202531 x 100 = 103.16%