49450% is the change from 2 to 991
Calculation steps:
[( 991 - 2 ) ÷ 2] x 100 = 49450%
Formula
Percentage change = [(991 - 2) / 2] x 100
Subtract the new number by the original number
991 - 2 = 989
989 ÷ 2 = 494.5
494.5 x 100 = 49450%
Example