179.17% is the change from 240 to 670
Calculation steps:
[( 670 - 240 ) ÷ 240] x 100 = 179.17%
Formula
Percentage change = [(670 - 240) / 240] x 100
Subtract the new number by the original number
670 - 240 = 430
430 ÷ 240 = 1.7916666666666667
1.7916666666666667 x 100 = 179.17%