81.66% is the change from 349 to 634
Calculation steps:
[( 634 - 349 ) ÷ 349] x 100 = 81.66%
Formula
Percentage change = [(634 - 349) / 349] x 100
Subtract the new number by the original number
634 - 349 = 285
285 ÷ 349 = 0.8166189111747851
0.8166189111747851 x 100 = 81.66%