101.3% is the change from 307 to 618
Calculation steps:
[( 618 - 307 ) ÷ 307] x 100 = 101.3%
Formula
Percentage change = [(618 - 307) / 307] x 100
Subtract the new number by the original number
618 - 307 = 311
311 ÷ 307 = 1.013029315960912
1.013029315960912 x 100 = 101.3%
Example