49.92% is the change from 665 to 997
Calculation steps:
[( 997 - 665 ) ÷ 665] x 100 = 49.92%
Formula
Percentage change = [(997 - 665) / 665] x 100
Subtract the new number by the original number
997 - 665 = 332
332 ÷ 665 = 0.4992481203007519
0.4992481203007519 x 100 = 49.92%