80.8% is the change from 349 to 631
Calculation steps:
[( 631 - 349 ) ÷ 349] x 100 = 80.8%
Formula
Percentage change = [(631 - 349) / 349] x 100
Subtract the new number by the original number
631 - 349 = 282
282 ÷ 349 = 0.8080229226361032
0.8080229226361032 x 100 = 80.8%