1007.78% is the change from 90 to 997
Calculation steps:
[( 997 - 90 ) ÷ 90] x 100 = 1007.78%
Formula
Percentage change = [(997 - 90) / 90] x 100
Subtract the new number by the original number
997 - 90 = 907
907 ÷ 90 = 10.077777777777778
10.077777777777778 x 100 = 1007.78%