146.27% is the change from 268 to 660
Calculation steps:
[( 660 - 268 ) ÷ 268] x 100 = 146.27%
Formula
Percentage change = [(660 - 268) / 268] x 100
Subtract the new number by the original number
660 - 268 = 392
392 ÷ 268 = 1.462686567164179
1.462686567164179 x 100 = 146.27%