148.12% is the change from 266 to 660
Calculation steps:
[( 660 - 266 ) ÷ 266] x 100 = 148.12%
Formula
Percentage change = [(660 - 266) / 266] x 100
Subtract the new number by the original number
660 - 266 = 394
394 ÷ 266 = 1.481203007518797
1.481203007518797 x 100 = 148.12%