1009.64% is the change from 83 to 921
Calculation steps:
[( 921 - 83 ) ÷ 83] x 100 = 1009.64%
Formula
Percentage change = [(921 - 83) / 83] x 100
Subtract the new number by the original number
921 - 83 = 838
838 ÷ 83 = 10.096385542168674
10.096385542168674 x 100 = 1009.64%