61.46% is the change from 397 to 641
Calculation steps:
[( 641 - 397 ) ÷ 397] x 100 = 61.46%
Formula
Percentage change = [(641 - 397) / 397] x 100
Subtract the new number by the original number
641 - 397 = 244
244 ÷ 397 = 0.6146095717884131
0.6146095717884131 x 100 = 61.46%