-90.9% is the change from 912 to 83
Calculation steps:
[( 83 - 912 ) ÷ 912] x 100 = -90.9%
Formula
Percentage change = [(83 - 912) / 912] x 100
Subtract the new number by the original number
83 - 912 = -829
-829 ÷ 912 = -0.9089912280701754
-0.9089912280701754 x 100 = -90.9%