121.7% is the change from 447 to 991
Calculation steps:
[( 991 - 447 ) ÷ 447] x 100 = 121.7%
Formula
Percentage change = [(991 - 447) / 447] x 100
Subtract the new number by the original number
991 - 447 = 544
544 ÷ 447 = 1.2170022371364653
1.2170022371364653 x 100 = 121.7%