-80.87% is the change from 826 to 158
Calculation steps:
[( 158 - 826 ) ÷ 826] x 100 = -80.87%
Formula
Percentage change = [(158 - 826) / 826] x 100
Subtract the new number by the original number
158 - 826 = -668
-668 ÷ 826 = -0.8087167070217918
-0.8087167070217918 x 100 = -80.87%