-81.56% is the change from 835 to 154
Calculation steps:
[( 154 - 835 ) ÷ 835] x 100 = -81.56%
Formula
Percentage change = [(154 - 835) / 835] x 100
Subtract the new number by the original number
154 - 835 = -681
-681 ÷ 835 = -0.8155688622754491
-0.8155688622754491 x 100 = -81.56%