100% is the change from 157 to 314
Calculation steps:
[( 314 - 157 ) ÷ 157] x 100 = 100%
Formula
Percentage change = [(314 - 157) / 157] x 100
Subtract the new number by the original number
314 - 157 = 157
157 ÷ 157 = 1
1 x 100 = 100%
Example