83.67% is the change from 349 to 641
Calculation steps:
[( 641 - 349 ) ÷ 349] x 100 = 83.67%
Formula
Percentage change = [(641 - 349) / 349] x 100
Subtract the new number by the original number
641 - 349 = 292
292 ÷ 349 = 0.836676217765043
0.836676217765043 x 100 = 83.67%