240% is the change from 200 to 680
Calculation steps:
[( 680 - 200 ) ÷ 200] x 100 = 240%
Formula
Percentage change = [(680 - 200) / 200] x 100
Subtract the new number by the original number
680 - 200 = 480
480 ÷ 200 = 2.4
2.4 x 100 = 240%
Example