900% is the change from 68 to 680
Calculation steps:
[( 680 - 68 ) ÷ 68] x 100 = 900%
Formula
Percentage change = [(680 - 68) / 68] x 100
Subtract the new number by the original number
680 - 68 = 612
612 ÷ 68 = 9
9 x 100 = 900%
Example