998.8% is the change from 83 to 912
Calculation steps:
[( 912 - 83 ) ÷ 83] x 100 = 998.8%
Formula
Percentage change = [(912 - 83) / 83] x 100
Subtract the new number by the original number
912 - 83 = 829
829 ÷ 83 = 9.987951807228916
9.987951807228916 x 100 = 998.8%