102.66% is the change from 489 to 991
Calculation steps:
[( 991 - 489 ) ÷ 489] x 100 = 102.66%
Formula
Percentage change = [(991 - 489) / 489] x 100
Subtract the new number by the original number
991 - 489 = 502
502 ÷ 489 = 1.0265848670756645
1.0265848670756645 x 100 = 102.66%