-89.95% is the change from 826 to 83
Calculation steps:
[( 83 - 826 ) ÷ 826] x 100 = -89.95%
Formula
Percentage change = [(83 - 826) / 826] x 100
Subtract the new number by the original number
83 - 826 = -743
-743 ÷ 826 = -0.8995157384987893
-0.8995157384987893 x 100 = -89.95%