49.7% is the change from 662 to 991
Calculation steps:
[( 991 - 662 ) ÷ 662] x 100 = 49.7%
Formula
Percentage change = [(991 - 662) / 662] x 100
Subtract the new number by the original number
991 - 662 = 329
329 ÷ 662 = 0.49697885196374625
0.49697885196374625 x 100 = 49.7%