89.97% is the change from 349 to 663
Calculation steps:
[( 663 - 349 ) ÷ 349] x 100 = 89.97%
Formula
Percentage change = [(663 - 349) / 349] x 100
Subtract the new number by the original number
663 - 349 = 314
314 ÷ 349 = 0.8997134670487106
0.8997134670487106 x 100 = 89.97%