-84.5% is the change from 826 to 128
Calculation steps:
[( 128 - 826 ) ÷ 826] x 100 = -84.5%
Formula
Percentage change = [(128 - 826) / 826] x 100
Subtract the new number by the original number
128 - 826 = -698
-698 ÷ 826 = -0.8450363196125908
-0.8450363196125908 x 100 = -84.5%