-83.66% is the change from 826 to 135
Calculation steps:
[( 135 - 826 ) ÷ 826] x 100 = -83.66%
Formula
Percentage change = [(135 - 826) / 826] x 100
Subtract the new number by the original number
135 - 826 = -691
-691 ÷ 826 = -0.8365617433414043
-0.8365617433414043 x 100 = -83.66%