68.01% is the change from 397 to 667
Calculation steps:
[( 667 - 397 ) ÷ 397] x 100 = 68.01%
Formula
Percentage change = [(667 - 397) / 397] x 100
Subtract the new number by the original number
667 - 397 = 270
270 ÷ 397 = 0.6801007556675063
0.6801007556675063 x 100 = 68.01%